21579440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14197}}^1$

素因数の和:14229

約数の個数: 40

約数和(自身を含む): 52816560

約数和(自身を除く): 31237120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14197, 28394, 56788, 70985, 113576, 141970, 227152, 269743, 283940, 539486, 567880, 1078972, 1135760, 1348715, 2157944, 2697430, 4315888, 5394860, 10789720, 21579440]

約数ペア:

[(1, 21579440), (2, 10789720), (4, 5394860), (5, 4315888), (8, 2697430), (10, 2157944), (16, 1348715), (19, 1135760), (20, 1078972), (38, 567880), (40, 539486), (76, 283940), (80, 269743), (95, 227152), (152, 141970), (190, 113576), (304, 70985), (380, 56788), (760, 28394), (1520, 14197)]