21245520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88523}}^1$

素因数の和:88539

約数の個数: 40

約数和(自身を含む): 65861856

約数和(自身を除く): 44616336

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88523, 177046, 265569, 354092, 442615, 531138, 708184, 885230, 1062276, 1327845, 1416368, 1770460, 2124552, 2655690, 3540920, 4249104, 5311380, 7081840, 10622760, 21245520]

約数ペア:

[(1, 21245520), (2, 10622760), (3, 7081840), (4, 5311380), (5, 4249104), (6, 3540920), (8, 2655690), (10, 2124552), (12, 1770460), (15, 1416368), (16, 1327845), (20, 1062276), (24, 885230), (30, 708184), (40, 531138), (48, 442615), (60, 354092), (80, 265569), (120, 177046), (240, 88523)]