21793304

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:348

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 25834696

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 41, 52, 76, 82, 104, 152, 164, 247, 269, 328, 494, 533, 538, 779, 988, 1066, 1076, 1558, 1976, 2132, 2152, 3116, 3497, 4264, 5111, 6232, 6994, 10127, 10222, 11029, 13988, 20254, 20444, 22058, 27976, 40508, 40888, 44116, 66443, 81016, 88232, 132886, 143377, 209551, 265772, 286754, 419102, 531544, 573508, 838204, 1147016, 1676408, 2724163, 5448326, 10896652, 21793304]

約数ペア:

[(1, 21793304), (2, 10896652), (4, 5448326), (8, 2724163), (13, 1676408), (19, 1147016), (26, 838204), (38, 573508), (41, 531544), (52, 419102), (76, 286754), (82, 265772), (104, 209551), (152, 143377), (164, 132886), (247, 88232), (269, 81016), (328, 66443), (494, 44116), (533, 40888), (538, 40508), (779, 27976), (988, 22058), (1066, 20444), (1076, 20254), (1558, 13988), (1976, 11029), (2132, 10222), (2152, 10127), (3116, 6994), (3497, 6232), (4264, 5111)]