1988900004

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{260191}}^1$

素因数の和:260225

約数の個数: 72

約数和(自身を含む): 5813730048

約数和(自身を除く): 3824830044

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 49, 52, 78, 84, 91, 98, 147, 156, 182, 196, 273, 294, 364, 546, 588, 637, 1092, 1274, 1911, 2548, 3822, 7644, 260191, 520382, 780573, 1040764, 1561146, 1821337, 3122292, 3382483, 3642674, 5464011, 6764966, 7285348, 10147449, 10928022, 12749359, 13529932, 20294898, 21856044, 23677381, 25498718, 38248077, 40589796, 47354762, 50997436, 71032143, 76496154, 94709524, 142064286, 152992308, 165741667, 284128572, 331483334, 497225001, 662966668, 994450002, 1988900004]

約数ペア:

[(1, 1988900004), (2, 994450002), (3, 662966668), (4, 497225001), (6, 331483334), (7, 284128572), (12, 165741667), (13, 152992308), (14, 142064286), (21, 94709524), (26, 76496154), (28, 71032143), (39, 50997436), (42, 47354762), (49, 40589796), (52, 38248077), (78, 25498718), (84, 23677381), (91, 21856044), (98, 20294898), (147, 13529932), (156, 12749359), (182, 10928022), (196, 10147449), (273, 7285348), (294, 6764966), (364, 5464011), (546, 3642674), (588, 3382483), (637, 3122292), (1092, 1821337), (1274, 1561146), (1911, 1040764), (2548, 780573), (3822, 520382), (7644, 260191)]