20365540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 49603680

約数和(自身を除く): 29238140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 37, 52, 58, 65, 73, 74, 116, 130, 145, 146, 148, 185, 260, 290, 292, 365, 370, 377, 481, 580, 730, 740, 754, 949, 962, 1073, 1460, 1508, 1885, 1898, 1924, 2117, 2146, 2405, 2701, 3770, 3796, 4234, 4292, 4745, 4810, 5365, 5402, 7540, 8468, 9490, 9620, 10585, 10730, 10804, 13505, 13949, 18980, 21170, 21460, 27010, 27521, 27898, 35113, 42340, 54020, 55042, 55796, 69745, 70226, 78329, 110084, 137605, 139490, 140452, 156658, 175565, 275210, 278980, 313316, 351130, 391645, 550420, 702260, 783290, 1018277, 1566580, 2036554, 4073108, 5091385, 10182770, 20365540]

約数ペア:

[(1, 20365540), (2, 10182770), (4, 5091385), (5, 4073108), (10, 2036554), (13, 1566580), (20, 1018277), (26, 783290), (29, 702260), (37, 550420), (52, 391645), (58, 351130), (65, 313316), (73, 278980), (74, 275210), (116, 175565), (130, 156658), (145, 140452), (146, 139490), (148, 137605), (185, 110084), (260, 78329), (290, 70226), (292, 69745), (365, 55796), (370, 55042), (377, 54020), (481, 42340), (580, 35113), (730, 27898), (740, 27521), (754, 27010), (949, 21460), (962, 21170), (1073, 18980), (1460, 13949), (1508, 13505), (1885, 10804), (1898, 10730), (1924, 10585), (2117, 9620), (2146, 9490), (2405, 8468), (2701, 7540), (3770, 5402), (3796, 5365), (4234, 4810), (4292, 4745)]