21403558

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 36560160

約数和(自身を除く): 15156602

約数列:

[1, 2, 11, 22, 41, 61, 82, 122, 389, 451, 671, 778, 902, 1342, 2501, 4279, 5002, 8558, 15949, 23729, 27511, 31898, 47458, 55022, 175439, 261019, 350878, 522038, 972889, 1945778, 10701779, 21403558]

約数ペア:

[(1, 21403558), (2, 10701779), (11, 1945778), (22, 972889), (41, 522038), (61, 350878), (82, 261019), (122, 175439), (389, 55022), (451, 47458), (671, 31898), (778, 27511), (902, 23729), (1342, 15949), (2501, 8558), (4279, 5002)]