20952160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7703}}^1$

素因数の和:7735

約数の個数: 48

約数和(自身を含む): 52418016

約数和(自身を除く): 31465856

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7703, 15406, 30812, 38515, 61624, 77030, 123248, 130951, 154060, 246496, 261902, 308120, 523804, 616240, 654755, 1047608, 1232480, 1309510, 2095216, 2619020, 4190432, 5238040, 10476080, 20952160]

約数ペア:

[(1, 20952160), (2, 10476080), (4, 5238040), (5, 4190432), (8, 2619020), (10, 2095216), (16, 1309510), (17, 1232480), (20, 1047608), (32, 654755), (34, 616240), (40, 523804), (68, 308120), (80, 261902), (85, 246496), (136, 154060), (160, 130951), (170, 123248), (272, 77030), (340, 61624), (544, 38515), (680, 30812), (1360, 15406), (2720, 7703)]