128831820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{499}}^1$

素因数の和:855

約数の個数: 96

約数和(自身を含む): 390432000

約数和(自身を除く): 261600180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 331, 390, 499, 662, 780, 993, 998, 1324, 1497, 1655, 1986, 1996, 2495, 2994, 3310, 3972, 4303, 4965, 4990, 5988, 6487, 6620, 7485, 8606, 9930, 9980, 12909, 12974, 14970, 17212, 19461, 19860, 21515, 25818, 25948, 29940, 32435, 38922, 43030, 51636, 64545, 64870, 77844, 86060, 97305, 129090, 129740, 165169, 194610, 258180, 330338, 389220, 495507, 660676, 825845, 991014, 1651690, 1982028, 2147197, 2477535, 3303380, 4294394, 4955070, 6441591, 8588788, 9910140, 10735985, 12883182, 21471970, 25766364, 32207955, 42943940, 64415910, 128831820]

約数ペア:

[(1, 128831820), (2, 64415910), (3, 42943940), (4, 32207955), (5, 25766364), (6, 21471970), (10, 12883182), (12, 10735985), (13, 9910140), (15, 8588788), (20, 6441591), (26, 4955070), (30, 4294394), (39, 3303380), (52, 2477535), (60, 2147197), (65, 1982028), (78, 1651690), (130, 991014), (156, 825845), (195, 660676), (260, 495507), (331, 389220), (390, 330338), (499, 258180), (662, 194610), (780, 165169), (993, 129740), (998, 129090), (1324, 97305), (1497, 86060), (1655, 77844), (1986, 64870), (1996, 64545), (2495, 51636), (2994, 43030), (3310, 38922), (3972, 32435), (4303, 29940), (4965, 25948), (4990, 25818), (5988, 21515), (6487, 19860), (6620, 19461), (7485, 17212), (8606, 14970), (9930, 12974), (9980, 12909)]