19711908

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1039}}^1$

素因数の和:1097

約数の個数: 72

約数和(自身を含む): 54512640

約数和(自身を除く): 34800732

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 31, 34, 36, 51, 62, 68, 93, 102, 124, 153, 186, 204, 279, 306, 372, 527, 558, 612, 1039, 1054, 1116, 1581, 2078, 2108, 3117, 3162, 4156, 4743, 6234, 6324, 9351, 9486, 12468, 17663, 18702, 18972, 32209, 35326, 37404, 52989, 64418, 70652, 96627, 105978, 128836, 158967, 193254, 211956, 289881, 317934, 386508, 547553, 579762, 635868, 1095106, 1159524, 1642659, 2190212, 3285318, 4927977, 6570636, 9855954, 19711908]

約数ペア:

[(1, 19711908), (2, 9855954), (3, 6570636), (4, 4927977), (6, 3285318), (9, 2190212), (12, 1642659), (17, 1159524), (18, 1095106), (31, 635868), (34, 579762), (36, 547553), (51, 386508), (62, 317934), (68, 289881), (93, 211956), (102, 193254), (124, 158967), (153, 128836), (186, 105978), (204, 96627), (279, 70652), (306, 64418), (372, 52989), (527, 37404), (558, 35326), (612, 32209), (1039, 18972), (1054, 18702), (1116, 17663), (1581, 12468), (2078, 9486), (2108, 9351), (3117, 6324), (3162, 6234), (4156, 4743)]