21593740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 56415744

約数和(自身を除く): 34822004

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 43, 68, 70, 85, 86, 119, 140, 170, 172, 211, 215, 238, 301, 340, 422, 430, 476, 595, 602, 731, 844, 860, 1055, 1190, 1204, 1462, 1477, 1505, 2110, 2380, 2924, 2954, 3010, 3587, 3655, 4220, 5117, 5908, 6020, 7174, 7310, 7385, 9073, 10234, 14348, 14620, 14770, 17935, 18146, 20468, 25109, 25585, 29540, 35870, 36292, 45365, 50218, 51170, 63511, 71740, 90730, 100436, 102340, 125545, 127022, 154241, 181460, 251090, 254044, 308482, 317555, 502180, 616964, 635110, 771205, 1079687, 1270220, 1542410, 2159374, 3084820, 4318748, 5398435, 10796870, 21593740]

約数ペア:

[(1, 21593740), (2, 10796870), (4, 5398435), (5, 4318748), (7, 3084820), (10, 2159374), (14, 1542410), (17, 1270220), (20, 1079687), (28, 771205), (34, 635110), (35, 616964), (43, 502180), (68, 317555), (70, 308482), (85, 254044), (86, 251090), (119, 181460), (140, 154241), (170, 127022), (172, 125545), (211, 102340), (215, 100436), (238, 90730), (301, 71740), (340, 63511), (422, 51170), (430, 50218), (476, 45365), (595, 36292), (602, 35870), (731, 29540), (844, 25585), (860, 25109), (1055, 20468), (1190, 18146), (1204, 17935), (1462, 14770), (1477, 14620), (1505, 14348), (2110, 10234), (2380, 9073), (2924, 7385), (2954, 7310), (3010, 7174), (3587, 6020), (3655, 5908), (4220, 5117)]