31185960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19991}}^1$

素因数の和:20018

約数の個数: 64

約数和(自身を含む): 100759680

約数和(自身を除く): 69573720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 19991, 39982, 59973, 79964, 99955, 119946, 159928, 199910, 239892, 259883, 299865, 399820, 479784, 519766, 599730, 779649, 799640, 1039532, 1199460, 1299415, 1559298, 2079064, 2398920, 2598830, 3118596, 3898245, 5197660, 6237192, 7796490, 10395320, 15592980, 31185960]

約数ペア:

[(1, 31185960), (2, 15592980), (3, 10395320), (4, 7796490), (5, 6237192), (6, 5197660), (8, 3898245), (10, 3118596), (12, 2598830), (13, 2398920), (15, 2079064), (20, 1559298), (24, 1299415), (26, 1199460), (30, 1039532), (39, 799640), (40, 779649), (52, 599730), (60, 519766), (65, 479784), (78, 399820), (104, 299865), (120, 259883), (130, 239892), (156, 199910), (195, 159928), (260, 119946), (312, 99955), (390, 79964), (520, 59973), (780, 39982), (1560, 19991)]