78912540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:441

約数の個数: 216

約数和(自身を含む): 291301920

約数和(自身を除く): 212389380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 28, 30, 35, 36, 42, 45, 46, 49, 60, 63, 69, 70, 84, 90, 92, 98, 105, 115, 126, 138, 140, 147, 161, 180, 196, 207, 210, 230, 245, 252, 276, 294, 315, 322, 345, 389, 414, 420, 441, 460, 483, 490, 588, 630, 644, 690, 735, 778, 805, 828, 882, 966, 980, 1035, 1127, 1167, 1260, 1380, 1449, 1470, 1556, 1610, 1764, 1932, 1945, 2070, 2205, 2254, 2334, 2415, 2723, 2898, 2940, 3220, 3381, 3501, 3890, 4140, 4410, 4508, 4668, 4830, 5446, 5635, 5796, 5835, 6762, 7002, 7245, 7780, 8169, 8820, 8947, 9660, 10143, 10892, 11270, 11670, 13524, 13615, 14004, 14490, 16338, 16905, 17505, 17894, 19061, 20286, 22540, 23340, 24507, 26841, 27230, 28980, 32676, 33810, 35010, 35788, 38122, 40572, 40845, 44735, 49014, 50715, 53682, 54460, 57183, 62629, 67620, 70020, 76244, 80523, 81690, 89470, 95305, 98028, 101430, 107364, 114366, 122535, 125258, 134205, 161046, 163380, 171549, 178940, 187887, 190610, 202860, 228732, 245070, 250516, 268410, 285915, 313145, 322092, 343098, 375774, 381220, 402615, 438403, 490140, 536820, 563661, 571830, 626290, 686196, 751548, 805230, 857745, 876806, 939435, 1127322, 1143660, 1252580, 1315209, 1610460, 1715490, 1753612, 1878870, 2192015, 2254644, 2630418, 2818305, 3430980, 3757740, 3945627, 4384030, 5260836, 5636610, 6576045, 7891254, 8768060, 11273220, 13152090, 15782508, 19728135, 26304180, 39456270, 78912540]

約数ペア:

[(1, 78912540), (2, 39456270), (3, 26304180), (4, 19728135), (5, 15782508), (6, 13152090), (7, 11273220), (9, 8768060), (10, 7891254), (12, 6576045), (14, 5636610), (15, 5260836), (18, 4384030), (20, 3945627), (21, 3757740), (23, 3430980), (28, 2818305), (30, 2630418), (35, 2254644), (36, 2192015), (42, 1878870), (45, 1753612), (46, 1715490), (49, 1610460), (60, 1315209), (63, 1252580), (69, 1143660), (70, 1127322), (84, 939435), (90, 876806), (92, 857745), (98, 805230), (105, 751548), (115, 686196), (126, 626290), (138, 571830), (140, 563661), (147, 536820), (161, 490140), (180, 438403), (196, 402615), (207, 381220), (210, 375774), (230, 343098), (245, 322092), (252, 313145), (276, 285915), (294, 268410), (315, 250516), (322, 245070), (345, 228732), (389, 202860), (414, 190610), (420, 187887), (441, 178940), (460, 171549), (483, 163380), (490, 161046), (588, 134205), (630, 125258), (644, 122535), (690, 114366), (735, 107364), (778, 101430), (805, 98028), (828, 95305), (882, 89470), (966, 81690), (980, 80523), (1035, 76244), (1127, 70020), (1167, 67620), (1260, 62629), (1380, 57183), (1449, 54460), (1470, 53682), (1556, 50715), (1610, 49014), (1764, 44735), (1932, 40845), (1945, 40572), (2070, 38122), (2205, 35788), (2254, 35010), (2334, 33810), (2415, 32676), (2723, 28980), (2898, 27230), (2940, 26841), (3220, 24507), (3381, 23340), (3501, 22540), (3890, 20286), (4140, 19061), (4410, 17894), (4508, 17505), (4668, 16905), (4830, 16338), (5446, 14490), (5635, 14004), (5796, 13615), (5835, 13524), (6762, 11670), (7002, 11270), (7245, 10892), (7780, 10143), (8169, 9660), (8820, 8947)]