18980364

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{421}}^1$

素因数の和:475

約数の個数: 72

約数和(自身を含む): 50785168

約数和(自身を除く): 31804804

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 289, 421, 442, 578, 663, 842, 867, 884, 1156, 1263, 1326, 1684, 1734, 2526, 2652, 3468, 3757, 5052, 5473, 7157, 7514, 10946, 11271, 14314, 15028, 16419, 21471, 21892, 22542, 28628, 32838, 42942, 45084, 65676, 85884, 93041, 121669, 186082, 243338, 279123, 365007, 372164, 486676, 558246, 730014, 1116492, 1460028, 1581697, 3163394, 4745091, 6326788, 9490182, 18980364]

約数ペア:

[(1, 18980364), (2, 9490182), (3, 6326788), (4, 4745091), (6, 3163394), (12, 1581697), (13, 1460028), (17, 1116492), (26, 730014), (34, 558246), (39, 486676), (51, 372164), (52, 365007), (68, 279123), (78, 243338), (102, 186082), (156, 121669), (204, 93041), (221, 85884), (289, 65676), (421, 45084), (442, 42942), (578, 32838), (663, 28628), (842, 22542), (867, 21892), (884, 21471), (1156, 16419), (1263, 15028), (1326, 14314), (1684, 11271), (1734, 10946), (2526, 7514), (2652, 7157), (3468, 5473), (3757, 5052)]