400996976

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{14821}}^1$

素因数の和:14937

約数の個数: 40

約数和(自身を含む): 827067600

約数和(自身を除く): 426070624

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 1424, 1691, 3382, 6764, 13528, 14821, 27056, 29642, 59284, 118568, 237136, 281599, 563198, 1126396, 1319069, 2252792, 2638138, 4505584, 5276276, 10552552, 21105104, 25062311, 50124622, 100249244, 200498488, 400996976]

約数ペア:

[(1, 400996976), (2, 200498488), (4, 100249244), (8, 50124622), (16, 25062311), (19, 21105104), (38, 10552552), (76, 5276276), (89, 4505584), (152, 2638138), (178, 2252792), (304, 1319069), (356, 1126396), (712, 563198), (1424, 281599), (1691, 237136), (3382, 118568), (6764, 59284), (13528, 29642), (14821, 27056)]