21116128

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 24606752

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 239, 251, 352, 478, 502, 956, 1004, 1912, 2008, 2629, 2761, 3824, 4016, 5258, 5522, 7648, 8032, 10516, 11044, 21032, 22088, 42064, 44176, 59989, 84128, 88352, 119978, 239956, 479912, 659879, 959824, 1319758, 1919648, 2639516, 5279032, 10558064, 21116128]

約数ペア:

[(1, 21116128), (2, 10558064), (4, 5279032), (8, 2639516), (11, 1919648), (16, 1319758), (22, 959824), (32, 659879), (44, 479912), (88, 239956), (176, 119978), (239, 88352), (251, 84128), (352, 59989), (478, 44176), (502, 42064), (956, 22088), (1004, 21032), (1912, 11044), (2008, 10516), (2629, 8032), (2761, 7648), (3824, 5522), (4016, 5258)]