21230704

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1699}}^1$

素因数の和:1789

約数の個数: 40

約数和(自身を含む): 45532800

約数和(自身を除く): 24302096

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 1136, 1562, 1699, 3124, 3398, 6248, 6796, 12496, 13592, 18689, 27184, 37378, 74756, 120629, 149512, 241258, 299024, 482516, 965032, 1326919, 1930064, 2653838, 5307676, 10615352, 21230704]

約数ペア:

[(1, 21230704), (2, 10615352), (4, 5307676), (8, 2653838), (11, 1930064), (16, 1326919), (22, 965032), (44, 482516), (71, 299024), (88, 241258), (142, 149512), (176, 120629), (284, 74756), (568, 37378), (781, 27184), (1136, 18689), (1562, 13592), (1699, 12496), (3124, 6796), (3398, 6248)]