400645520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41389}}^1$

素因数の和:41424

約数の個数: 60

約数和(自身を含む): 1023905820

約数和(自身を除く): 623260300

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2420, 4840, 9680, 41389, 82778, 165556, 206945, 331112, 413890, 455279, 662224, 827780, 910558, 1655560, 1821116, 2276395, 3311120, 3642232, 4552790, 5008069, 7284464, 9105580, 10016138, 18211160, 20032276, 25040345, 36422320, 40064552, 50080690, 80129104, 100161380, 200322760, 400645520]

約数ペア:

[(1, 400645520), (2, 200322760), (4, 100161380), (5, 80129104), (8, 50080690), (10, 40064552), (11, 36422320), (16, 25040345), (20, 20032276), (22, 18211160), (40, 10016138), (44, 9105580), (55, 7284464), (80, 5008069), (88, 4552790), (110, 3642232), (121, 3311120), (176, 2276395), (220, 1821116), (242, 1655560), (440, 910558), (484, 827780), (605, 662224), (880, 455279), (968, 413890), (1210, 331112), (1936, 206945), (2420, 165556), (4840, 82778), (9680, 41389)]