21330480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:155

約数の個数: 160

約数和(自身を含む): 70852608

約数和(自身を除く): 49522128

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 47, 48, 60, 61, 62, 80, 93, 94, 120, 122, 124, 141, 155, 183, 186, 188, 235, 240, 244, 248, 282, 305, 310, 366, 372, 376, 465, 470, 488, 496, 564, 610, 620, 705, 732, 744, 752, 915, 930, 940, 976, 1128, 1220, 1240, 1410, 1457, 1464, 1488, 1830, 1860, 1880, 1891, 2256, 2440, 2480, 2820, 2867, 2914, 2928, 3660, 3720, 3760, 3782, 4371, 4880, 5640, 5673, 5734, 5828, 7285, 7320, 7440, 7564, 8601, 8742, 9455, 11280, 11346, 11468, 11656, 14335, 14570, 14640, 15128, 17202, 17484, 18910, 21855, 22692, 22936, 23312, 28365, 28670, 29140, 30256, 34404, 34968, 37820, 43005, 43710, 45384, 45872, 56730, 57340, 58280, 68808, 69936, 75640, 86010, 87420, 88877, 90768, 113460, 114680, 116560, 137616, 151280, 172020, 174840, 177754, 226920, 229360, 266631, 344040, 349680, 355508, 444385, 453840, 533262, 688080, 711016, 888770, 1066524, 1333155, 1422032, 1777540, 2133048, 2666310, 3555080, 4266096, 5332620, 7110160, 10665240, 21330480]

約数ペア:

[(1, 21330480), (2, 10665240), (3, 7110160), (4, 5332620), (5, 4266096), (6, 3555080), (8, 2666310), (10, 2133048), (12, 1777540), (15, 1422032), (16, 1333155), (20, 1066524), (24, 888770), (30, 711016), (31, 688080), (40, 533262), (47, 453840), (48, 444385), (60, 355508), (61, 349680), (62, 344040), (80, 266631), (93, 229360), (94, 226920), (120, 177754), (122, 174840), (124, 172020), (141, 151280), (155, 137616), (183, 116560), (186, 114680), (188, 113460), (235, 90768), (240, 88877), (244, 87420), (248, 86010), (282, 75640), (305, 69936), (310, 68808), (366, 58280), (372, 57340), (376, 56730), (465, 45872), (470, 45384), (488, 43710), (496, 43005), (564, 37820), (610, 34968), (620, 34404), (705, 30256), (732, 29140), (744, 28670), (752, 28365), (915, 23312), (930, 22936), (940, 22692), (976, 21855), (1128, 18910), (1220, 17484), (1240, 17202), (1410, 15128), (1457, 14640), (1464, 14570), (1488, 14335), (1830, 11656), (1860, 11468), (1880, 11346), (1891, 11280), (2256, 9455), (2440, 8742), (2480, 8601), (2820, 7564), (2867, 7440), (2914, 7320), (2928, 7285), (3660, 5828), (3720, 5734), (3760, 5673), (3782, 5640), (4371, 4880)]