21908516

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 45330432

約数和(自身を除く): 23421916

約数列:

[1, 2, 4, 7, 14, 28, 61, 101, 122, 127, 202, 244, 254, 404, 427, 508, 707, 854, 889, 1414, 1708, 1778, 2828, 3556, 6161, 7747, 12322, 12827, 15494, 24644, 25654, 30988, 43127, 51308, 54229, 86254, 89789, 108458, 172508, 179578, 216916, 359156, 782447, 1564894, 3129788, 5477129, 10954258, 21908516]

約数ペア:

[(1, 21908516), (2, 10954258), (4, 5477129), (7, 3129788), (14, 1564894), (28, 782447), (61, 359156), (101, 216916), (122, 179578), (127, 172508), (202, 108458), (244, 89789), (254, 86254), (404, 54229), (427, 51308), (508, 43127), (707, 30988), (854, 25654), (889, 24644), (1414, 15494), (1708, 12827), (1778, 12322), (2828, 7747), (3556, 6161)]