54181420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 117180000

約数和(自身を除く): 62998580

約数列:

[1, 2, 4, 5, 10, 20, 61, 89, 122, 178, 244, 305, 356, 445, 499, 610, 890, 998, 1220, 1780, 1996, 2495, 4990, 5429, 9980, 10858, 21716, 27145, 30439, 44411, 54290, 60878, 88822, 108580, 121756, 152195, 177644, 222055, 304390, 444110, 608780, 888220, 2709071, 5418142, 10836284, 13545355, 27090710, 54181420]

約数ペア:

[(1, 54181420), (2, 27090710), (4, 13545355), (5, 10836284), (10, 5418142), (20, 2709071), (61, 888220), (89, 608780), (122, 444110), (178, 304390), (244, 222055), (305, 177644), (356, 152195), (445, 121756), (499, 108580), (610, 88822), (890, 60878), (998, 54290), (1220, 44411), (1780, 30439), (1996, 27145), (2495, 21716), (4990, 10858), (5429, 9980)]