21145480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27823}}^1$

素因数の和:27853

約数の個数: 32

約数和(自身を含む): 50083200

約数和(自身を除く): 28937720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27823, 55646, 111292, 139115, 222584, 278230, 528637, 556460, 1057274, 1112920, 2114548, 2643185, 4229096, 5286370, 10572740, 21145480]

約数ペア:

[(1, 21145480), (2, 10572740), (4, 5286370), (5, 4229096), (8, 2643185), (10, 2114548), (19, 1112920), (20, 1057274), (38, 556460), (40, 528637), (76, 278230), (95, 222584), (152, 139115), (190, 111292), (380, 55646), (760, 27823)]