20989120

素因数分解:

$2^6\times 5^1\times {\mathrm{107}}^1\times {\mathrm{613}}^1$

素因数の和:737

約数の個数: 56

約数和(自身を含む): 50529744

約数和(自身を除く): 29540624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 160, 214, 320, 428, 535, 613, 856, 1070, 1226, 1712, 2140, 2452, 3065, 3424, 4280, 4904, 6130, 6848, 8560, 9808, 12260, 17120, 19616, 24520, 34240, 39232, 49040, 65591, 98080, 131182, 196160, 262364, 327955, 524728, 655910, 1049456, 1311820, 2098912, 2623640, 4197824, 5247280, 10494560, 20989120]

約数ペア:

[(1, 20989120), (2, 10494560), (4, 5247280), (5, 4197824), (8, 2623640), (10, 2098912), (16, 1311820), (20, 1049456), (32, 655910), (40, 524728), (64, 327955), (80, 262364), (107, 196160), (160, 131182), (214, 98080), (320, 65591), (428, 49040), (535, 39232), (613, 34240), (856, 24520), (1070, 19616), (1226, 17120), (1712, 12260), (2140, 9808), (2452, 8560), (3065, 6848), (3424, 6130), (4280, 4904)]