87812140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19867}}^1$

素因数の和:19906

約数の個数: 48

約数和(自身を含む): 210282912

約数和(自身を除く): 122470772

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 19867, 39734, 79468, 99335, 198670, 258271, 337739, 397340, 516542, 675478, 1033084, 1291355, 1350956, 1688695, 2582710, 3377390, 4390607, 5165420, 6754780, 8781214, 17562428, 21953035, 43906070, 87812140]

約数ペア:

[(1, 87812140), (2, 43906070), (4, 21953035), (5, 17562428), (10, 8781214), (13, 6754780), (17, 5165420), (20, 4390607), (26, 3377390), (34, 2582710), (52, 1688695), (65, 1350956), (68, 1291355), (85, 1033084), (130, 675478), (170, 516542), (221, 397340), (260, 337739), (340, 258271), (442, 198670), (884, 99335), (1105, 79468), (2210, 39734), (4420, 19867)]