205489480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:359

約数の個数: 128

約数和(自身を含む): 549607680

約数和(自身を除く): 344118200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 61, 70, 106, 122, 140, 212, 227, 244, 265, 280, 305, 371, 424, 427, 454, 488, 530, 610, 742, 854, 908, 1060, 1135, 1220, 1484, 1589, 1708, 1816, 1855, 2120, 2135, 2270, 2440, 2968, 3178, 3233, 3416, 3710, 4270, 4540, 6356, 6466, 7420, 7945, 8540, 9080, 12031, 12712, 12932, 13847, 14840, 15890, 16165, 17080, 22631, 24062, 25864, 27694, 31780, 32330, 45262, 48124, 55388, 60155, 63560, 64660, 69235, 84217, 90524, 96248, 96929, 110776, 113155, 120310, 129320, 138470, 168434, 181048, 193858, 226310, 240620, 276940, 336868, 387716, 421085, 452620, 481240, 484645, 553880, 673736, 733891, 775432, 842170, 905240, 969290, 1467782, 1684340, 1938580, 2935564, 3368680, 3669455, 3877160, 5137237, 5871128, 7338910, 10274474, 14677820, 20548948, 25686185, 29355640, 41097896, 51372370, 102744740, 205489480]

約数ペア:

[(1, 205489480), (2, 102744740), (4, 51372370), (5, 41097896), (7, 29355640), (8, 25686185), (10, 20548948), (14, 14677820), (20, 10274474), (28, 7338910), (35, 5871128), (40, 5137237), (53, 3877160), (56, 3669455), (61, 3368680), (70, 2935564), (106, 1938580), (122, 1684340), (140, 1467782), (212, 969290), (227, 905240), (244, 842170), (265, 775432), (280, 733891), (305, 673736), (371, 553880), (424, 484645), (427, 481240), (454, 452620), (488, 421085), (530, 387716), (610, 336868), (742, 276940), (854, 240620), (908, 226310), (1060, 193858), (1135, 181048), (1220, 168434), (1484, 138470), (1589, 129320), (1708, 120310), (1816, 113155), (1855, 110776), (2120, 96929), (2135, 96248), (2270, 90524), (2440, 84217), (2968, 69235), (3178, 64660), (3233, 63560), (3416, 60155), (3710, 55388), (4270, 48124), (4540, 45262), (6356, 32330), (6466, 31780), (7420, 27694), (7945, 25864), (8540, 24062), (9080, 22631), (12031, 17080), (12712, 16165), (12932, 15890), (13847, 14840)]