19543880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{701}}^1$

素因数の和:770

約数の個数: 64

約数和(自身を含む): 47764080

約数和(自身を除く): 28220200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 680, 697, 701, 820, 1394, 1402, 1640, 2788, 2804, 3485, 3505, 5576, 5608, 6970, 7010, 11917, 13940, 14020, 23834, 27880, 28040, 28741, 47668, 57482, 59585, 95336, 114964, 119170, 143705, 229928, 238340, 287410, 476680, 488597, 574820, 977194, 1149640, 1954388, 2442985, 3908776, 4885970, 9771940, 19543880]

約数ペア:

[(1, 19543880), (2, 9771940), (4, 4885970), (5, 3908776), (8, 2442985), (10, 1954388), (17, 1149640), (20, 977194), (34, 574820), (40, 488597), (41, 476680), (68, 287410), (82, 238340), (85, 229928), (136, 143705), (164, 119170), (170, 114964), (205, 95336), (328, 59585), (340, 57482), (410, 47668), (680, 28741), (697, 28040), (701, 27880), (820, 23834), (1394, 14020), (1402, 13940), (1640, 11917), (2788, 7010), (2804, 6970), (3485, 5608), (3505, 5576)]