20823740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33366340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 35, 46, 58, 70, 92, 115, 116, 140, 145, 161, 203, 223, 230, 290, 322, 406, 446, 460, 580, 644, 667, 805, 812, 892, 1015, 1115, 1334, 1561, 1610, 2030, 2230, 2668, 3122, 3220, 3335, 4060, 4460, 4669, 5129, 6244, 6467, 6670, 7805, 9338, 10258, 12934, 13340, 15610, 18676, 20516, 23345, 25645, 25868, 31220, 32335, 35903, 45269, 46690, 51290, 64670, 71806, 90538, 93380, 102580, 129340, 143612, 148741, 179515, 181076, 226345, 297482, 359030, 452690, 594964, 718060, 743705, 905380, 1041187, 1487410, 2082374, 2974820, 4164748, 5205935, 10411870, 20823740]

約数ペア:

[(1, 20823740), (2, 10411870), (4, 5205935), (5, 4164748), (7, 2974820), (10, 2082374), (14, 1487410), (20, 1041187), (23, 905380), (28, 743705), (29, 718060), (35, 594964), (46, 452690), (58, 359030), (70, 297482), (92, 226345), (115, 181076), (116, 179515), (140, 148741), (145, 143612), (161, 129340), (203, 102580), (223, 93380), (230, 90538), (290, 71806), (322, 64670), (406, 51290), (446, 46690), (460, 45269), (580, 35903), (644, 32335), (667, 31220), (805, 25868), (812, 25645), (892, 23345), (1015, 20516), (1115, 18676), (1334, 15610), (1561, 13340), (1610, 12934), (2030, 10258), (2230, 9338), (2668, 7805), (3122, 6670), (3220, 6467), (3335, 6244), (4060, 5129), (4460, 4669)]