20654560

素因数分解:

$2^5\times 5^1\times {\mathrm{167}}^1\times {\mathrm{773}}^1$

素因数の和:955

約数の個数: 48

約数和(自身を含む): 49152096

約数和(自身を除く): 28497536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 167, 334, 668, 773, 835, 1336, 1546, 1670, 2672, 3092, 3340, 3865, 5344, 6184, 6680, 7730, 12368, 13360, 15460, 24736, 26720, 30920, 61840, 123680, 129091, 258182, 516364, 645455, 1032728, 1290910, 2065456, 2581820, 4130912, 5163640, 10327280, 20654560]

約数ペア:

[(1, 20654560), (2, 10327280), (4, 5163640), (5, 4130912), (8, 2581820), (10, 2065456), (16, 1290910), (20, 1032728), (32, 645455), (40, 516364), (80, 258182), (160, 129091), (167, 123680), (334, 61840), (668, 30920), (773, 26720), (835, 24736), (1336, 15460), (1546, 13360), (1670, 12368), (2672, 7730), (3092, 6680), (3340, 6184), (3865, 5344)]