20919912

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3529}}^1$

素因数の和:3570

約数の個数: 64

約数和(自身を含む): 59304000

約数和(自身を除く): 38384088

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 19, 24, 26, 38, 39, 52, 57, 76, 78, 104, 114, 152, 156, 228, 247, 312, 456, 494, 741, 988, 1482, 1976, 2964, 3529, 5928, 7058, 10587, 14116, 21174, 28232, 42348, 45877, 67051, 84696, 91754, 134102, 137631, 183508, 201153, 268204, 275262, 367016, 402306, 536408, 550524, 804612, 871663, 1101048, 1609224, 1743326, 2614989, 3486652, 5229978, 6973304, 10459956, 20919912]

約数ペア:

[(1, 20919912), (2, 10459956), (3, 6973304), (4, 5229978), (6, 3486652), (8, 2614989), (12, 1743326), (13, 1609224), (19, 1101048), (24, 871663), (26, 804612), (38, 550524), (39, 536408), (52, 402306), (57, 367016), (76, 275262), (78, 268204), (104, 201153), (114, 183508), (152, 137631), (156, 134102), (228, 91754), (247, 84696), (312, 67051), (456, 45877), (494, 42348), (741, 28232), (988, 21174), (1482, 14116), (1976, 10587), (2964, 7058), (3529, 5928)]