19167980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 44824752

約数和(自身を除く): 25656772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 107, 130, 169, 212, 214, 260, 265, 338, 428, 530, 535, 676, 689, 845, 1060, 1070, 1378, 1391, 1690, 2140, 2756, 2782, 3380, 3445, 5564, 5671, 6890, 6955, 8957, 11342, 13780, 13910, 17914, 18083, 22684, 27820, 28355, 35828, 36166, 44785, 56710, 72332, 73723, 89570, 90415, 113420, 147446, 179140, 180830, 294892, 361660, 368615, 737230, 958399, 1474460, 1916798, 3833596, 4791995, 9583990, 19167980]

約数ペア:

[(1, 19167980), (2, 9583990), (4, 4791995), (5, 3833596), (10, 1916798), (13, 1474460), (20, 958399), (26, 737230), (52, 368615), (53, 361660), (65, 294892), (106, 180830), (107, 179140), (130, 147446), (169, 113420), (212, 90415), (214, 89570), (260, 73723), (265, 72332), (338, 56710), (428, 44785), (530, 36166), (535, 35828), (676, 28355), (689, 27820), (845, 22684), (1060, 18083), (1070, 17914), (1378, 13910), (1391, 13780), (1690, 11342), (2140, 8957), (2756, 6955), (2782, 6890), (3380, 5671), (3445, 5564)]