20657910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:107

約数の個数: 192

約数和(自身を含む): 66189312

約数和(自身を除く): 45531402

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 23, 26, 30, 35, 39, 42, 46, 47, 49, 65, 69, 70, 78, 91, 94, 98, 105, 115, 130, 138, 141, 147, 161, 182, 195, 210, 230, 235, 245, 273, 282, 294, 299, 322, 329, 345, 390, 455, 470, 483, 490, 546, 598, 611, 637, 658, 690, 705, 735, 805, 897, 910, 966, 987, 1081, 1127, 1222, 1274, 1365, 1410, 1470, 1495, 1610, 1645, 1794, 1833, 1911, 1974, 2093, 2162, 2254, 2303, 2415, 2730, 2990, 3055, 3185, 3243, 3290, 3381, 3666, 3822, 4186, 4277, 4485, 4606, 4830, 4935, 5405, 5635, 6110, 6279, 6370, 6486, 6762, 6909, 7567, 8554, 8970, 9165, 9555, 9870, 10465, 10810, 11270, 11515, 12558, 12831, 13818, 14053, 14651, 15134, 16215, 16905, 18330, 19110, 20930, 21385, 22701, 23030, 25662, 28106, 29302, 29939, 31395, 32430, 33810, 34545, 37835, 42159, 42770, 43953, 45402, 52969, 59878, 62790, 64155, 69090, 70265, 73255, 75670, 84318, 87906, 89817, 98371, 105938, 113505, 128310, 140530, 146510, 149695, 158907, 179634, 196742, 210795, 219765, 227010, 264845, 295113, 299390, 317814, 421590, 439530, 449085, 491855, 529690, 590226, 688597, 794535, 898170, 983710, 1377194, 1475565, 1589070, 2065791, 2951130, 3442985, 4131582, 6885970, 10328955, 20657910]

約数ペア:

[(1, 20657910), (2, 10328955), (3, 6885970), (5, 4131582), (6, 3442985), (7, 2951130), (10, 2065791), (13, 1589070), (14, 1475565), (15, 1377194), (21, 983710), (23, 898170), (26, 794535), (30, 688597), (35, 590226), (39, 529690), (42, 491855), (46, 449085), (47, 439530), (49, 421590), (65, 317814), (69, 299390), (70, 295113), (78, 264845), (91, 227010), (94, 219765), (98, 210795), (105, 196742), (115, 179634), (130, 158907), (138, 149695), (141, 146510), (147, 140530), (161, 128310), (182, 113505), (195, 105938), (210, 98371), (230, 89817), (235, 87906), (245, 84318), (273, 75670), (282, 73255), (294, 70265), (299, 69090), (322, 64155), (329, 62790), (345, 59878), (390, 52969), (455, 45402), (470, 43953), (483, 42770), (490, 42159), (546, 37835), (598, 34545), (611, 33810), (637, 32430), (658, 31395), (690, 29939), (705, 29302), (735, 28106), (805, 25662), (897, 23030), (910, 22701), (966, 21385), (987, 20930), (1081, 19110), (1127, 18330), (1222, 16905), (1274, 16215), (1365, 15134), (1410, 14651), (1470, 14053), (1495, 13818), (1610, 12831), (1645, 12558), (1794, 11515), (1833, 11270), (1911, 10810), (1974, 10465), (2093, 9870), (2162, 9555), (2254, 9165), (2303, 8970), (2415, 8554), (2730, 7567), (2990, 6909), (3055, 6762), (3185, 6486), (3243, 6370), (3290, 6279), (3381, 6110), (3666, 5635), (3822, 5405), (4186, 4935), (4277, 4830), (4485, 4606)]