21011560

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14197}}^1$

素因数の和:14245

約数の個数: 32

約数和(自身を含む): 48557160

約数和(自身を除く): 27545600

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14197, 28394, 56788, 70985, 113576, 141970, 283940, 525289, 567880, 1050578, 2101156, 2626445, 4202312, 5252890, 10505780, 21011560]

約数ペア:

[(1, 21011560), (2, 10505780), (4, 5252890), (5, 4202312), (8, 2626445), (10, 2101156), (20, 1050578), (37, 567880), (40, 525289), (74, 283940), (148, 141970), (185, 113576), (296, 70985), (370, 56788), (740, 28394), (1480, 14197)]