20311480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:309

約数の個数: 96

約数和(自身を含む): 54624240

約数和(自身を除く): 34312760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 49, 56, 70, 86, 98, 140, 172, 196, 215, 241, 245, 280, 301, 344, 392, 430, 482, 490, 602, 860, 964, 980, 1204, 1205, 1505, 1687, 1720, 1928, 1960, 2107, 2408, 2410, 3010, 3374, 4214, 4820, 6020, 6748, 8428, 8435, 9640, 10363, 10535, 11809, 12040, 13496, 16856, 16870, 20726, 21070, 23618, 33740, 41452, 42140, 47236, 51815, 59045, 67480, 72541, 82904, 84280, 94472, 103630, 118090, 145082, 207260, 236180, 290164, 362705, 414520, 472360, 507787, 580328, 725410, 1015574, 1450820, 2031148, 2538935, 2901640, 4062296, 5077870, 10155740, 20311480]

約数ペア:

[(1, 20311480), (2, 10155740), (4, 5077870), (5, 4062296), (7, 2901640), (8, 2538935), (10, 2031148), (14, 1450820), (20, 1015574), (28, 725410), (35, 580328), (40, 507787), (43, 472360), (49, 414520), (56, 362705), (70, 290164), (86, 236180), (98, 207260), (140, 145082), (172, 118090), (196, 103630), (215, 94472), (241, 84280), (245, 82904), (280, 72541), (301, 67480), (344, 59045), (392, 51815), (430, 47236), (482, 42140), (490, 41452), (602, 33740), (860, 23618), (964, 21070), (980, 20726), (1204, 16870), (1205, 16856), (1505, 13496), (1687, 12040), (1720, 11809), (1928, 10535), (1960, 10363), (2107, 9640), (2408, 8435), (2410, 8428), (3010, 6748), (3374, 6020), (4214, 4820)]