21101860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{293}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 48058416

約数和(自身を除く): 26956556

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 293, 554, 586, 1108, 1172, 1385, 1465, 2770, 2930, 3601, 3809, 5540, 5860, 7202, 7618, 14404, 15236, 18005, 19045, 36010, 38090, 72020, 76180, 81161, 162322, 324644, 405805, 811610, 1055093, 1623220, 2110186, 4220372, 5275465, 10550930, 21101860]

約数ペア:

[(1, 21101860), (2, 10550930), (4, 5275465), (5, 4220372), (10, 2110186), (13, 1623220), (20, 1055093), (26, 811610), (52, 405805), (65, 324644), (130, 162322), (260, 81161), (277, 76180), (293, 72020), (554, 38090), (586, 36010), (1108, 19045), (1172, 18005), (1385, 15236), (1465, 14404), (2770, 7618), (2930, 7202), (3601, 5860), (3809, 5540)]