21573940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 25600460

約数列:

[1, 2, 4, 5, 10, 20, 47, 59, 94, 118, 188, 235, 236, 295, 389, 470, 590, 778, 940, 1180, 1556, 1945, 2773, 3890, 5546, 7780, 11092, 13865, 18283, 22951, 27730, 36566, 45902, 55460, 73132, 91415, 91804, 114755, 182830, 229510, 365660, 459020, 1078697, 2157394, 4314788, 5393485, 10786970, 21573940]

約数ペア:

[(1, 21573940), (2, 10786970), (4, 5393485), (5, 4314788), (10, 2157394), (20, 1078697), (47, 459020), (59, 365660), (94, 229510), (118, 182830), (188, 114755), (235, 91804), (236, 91415), (295, 73132), (389, 55460), (470, 45902), (590, 36566), (778, 27730), (940, 22951), (1180, 18283), (1556, 13865), (1945, 11092), (2773, 7780), (3890, 5546)]