19863220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{317}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 45250128

約数和(自身を除く): 25386908

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 241, 260, 317, 482, 634, 964, 1205, 1268, 1585, 2410, 3133, 3170, 4121, 4820, 6266, 6340, 8242, 12532, 15665, 16484, 20605, 31330, 41210, 62660, 76397, 82420, 152794, 305588, 381985, 763970, 993161, 1527940, 1986322, 3972644, 4965805, 9931610, 19863220]

約数ペア:

[(1, 19863220), (2, 9931610), (4, 4965805), (5, 3972644), (10, 1986322), (13, 1527940), (20, 993161), (26, 763970), (52, 381985), (65, 305588), (130, 152794), (241, 82420), (260, 76397), (317, 62660), (482, 41210), (634, 31330), (964, 20605), (1205, 16484), (1268, 15665), (1585, 12532), (2410, 8242), (3133, 6340), (3170, 6266), (4121, 4820)]