21511600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4889}}^1$

素因数の和:4918

約数の個数: 60

約数和(自身を含む): 56391480

約数和(自身を除く): 34879880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4889, 9778, 19556, 24445, 39112, 48890, 53779, 78224, 97780, 107558, 122225, 195560, 215116, 244450, 268895, 391120, 430232, 488900, 537790, 860464, 977800, 1075580, 1344475, 1955600, 2151160, 2688950, 4302320, 5377900, 10755800, 21511600]

約数ペア:

[(1, 21511600), (2, 10755800), (4, 5377900), (5, 4302320), (8, 2688950), (10, 2151160), (11, 1955600), (16, 1344475), (20, 1075580), (22, 977800), (25, 860464), (40, 537790), (44, 488900), (50, 430232), (55, 391120), (80, 268895), (88, 244450), (100, 215116), (110, 195560), (176, 122225), (200, 107558), (220, 97780), (275, 78224), (400, 53779), (440, 48890), (550, 39112), (880, 24445), (1100, 19556), (2200, 9778), (4400, 4889)]