19807580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 28455460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 37, 52, 58, 65, 71, 74, 116, 130, 142, 145, 148, 185, 260, 284, 290, 355, 370, 377, 481, 580, 710, 740, 754, 923, 962, 1073, 1420, 1508, 1846, 1885, 1924, 2059, 2146, 2405, 2627, 3692, 3770, 4118, 4292, 4615, 4810, 5254, 5365, 7540, 8236, 9230, 9620, 10295, 10508, 10730, 13135, 13949, 18460, 20590, 21460, 26270, 26767, 27898, 34151, 41180, 52540, 53534, 55796, 68302, 69745, 76183, 107068, 133835, 136604, 139490, 152366, 170755, 267670, 278980, 304732, 341510, 380915, 535340, 683020, 761830, 990379, 1523660, 1980758, 3961516, 4951895, 9903790, 19807580]

約数ペア:

[(1, 19807580), (2, 9903790), (4, 4951895), (5, 3961516), (10, 1980758), (13, 1523660), (20, 990379), (26, 761830), (29, 683020), (37, 535340), (52, 380915), (58, 341510), (65, 304732), (71, 278980), (74, 267670), (116, 170755), (130, 152366), (142, 139490), (145, 136604), (148, 133835), (185, 107068), (260, 76183), (284, 69745), (290, 68302), (355, 55796), (370, 53534), (377, 52540), (481, 41180), (580, 34151), (710, 27898), (740, 26767), (754, 26270), (923, 21460), (962, 20590), (1073, 18460), (1420, 13949), (1508, 13135), (1846, 10730), (1885, 10508), (1924, 10295), (2059, 9620), (2146, 9230), (2405, 8236), (2627, 7540), (3692, 5365), (3770, 5254), (4118, 4810), (4292, 4615)]