77990900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3529}}^1$

素因数の和:3573

約数の個数: 72

約数和(自身を含む): 193034520

約数和(自身を除く): 115043620

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 100, 130, 170, 221, 260, 325, 340, 425, 442, 650, 850, 884, 1105, 1300, 1700, 2210, 3529, 4420, 5525, 7058, 11050, 14116, 17645, 22100, 35290, 45877, 59993, 70580, 88225, 91754, 119986, 176450, 183508, 229385, 239972, 299965, 352900, 458770, 599930, 779909, 917540, 1146925, 1199860, 1499825, 1559818, 2293850, 2999650, 3119636, 3899545, 4587700, 5999300, 7799090, 15598180, 19497725, 38995450, 77990900]

約数ペア:

[(1, 77990900), (2, 38995450), (4, 19497725), (5, 15598180), (10, 7799090), (13, 5999300), (17, 4587700), (20, 3899545), (25, 3119636), (26, 2999650), (34, 2293850), (50, 1559818), (52, 1499825), (65, 1199860), (68, 1146925), (85, 917540), (100, 779909), (130, 599930), (170, 458770), (221, 352900), (260, 299965), (325, 239972), (340, 229385), (425, 183508), (442, 176450), (650, 119986), (850, 91754), (884, 88225), (1105, 70580), (1300, 59993), (1700, 45877), (2210, 35290), (3529, 22100), (4420, 17645), (5525, 14116), (7058, 11050)]