20045740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 50916096

約数和(自身を除く): 30870356

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 43, 44, 52, 55, 65, 86, 110, 130, 143, 163, 172, 215, 220, 260, 286, 326, 430, 473, 559, 572, 652, 715, 815, 860, 946, 1118, 1430, 1630, 1793, 1892, 2119, 2236, 2365, 2795, 2860, 3260, 3586, 4238, 4730, 5590, 6149, 7009, 7172, 8476, 8965, 9460, 10595, 11180, 12298, 14018, 17930, 21190, 23309, 24596, 28036, 30745, 35045, 35860, 42380, 46618, 61490, 70090, 77099, 91117, 93236, 116545, 122980, 140180, 154198, 182234, 233090, 308396, 364468, 385495, 455585, 466180, 770990, 911170, 1002287, 1541980, 1822340, 2004574, 4009148, 5011435, 10022870, 20045740]

約数ペア:

[(1, 20045740), (2, 10022870), (4, 5011435), (5, 4009148), (10, 2004574), (11, 1822340), (13, 1541980), (20, 1002287), (22, 911170), (26, 770990), (43, 466180), (44, 455585), (52, 385495), (55, 364468), (65, 308396), (86, 233090), (110, 182234), (130, 154198), (143, 140180), (163, 122980), (172, 116545), (215, 93236), (220, 91117), (260, 77099), (286, 70090), (326, 61490), (430, 46618), (473, 42380), (559, 35860), (572, 35045), (652, 30745), (715, 28036), (815, 24596), (860, 23309), (946, 21190), (1118, 17930), (1430, 14018), (1630, 12298), (1793, 11180), (1892, 10595), (2119, 9460), (2236, 8965), (2365, 8476), (2795, 7172), (2860, 7009), (3260, 6149), (3586, 5590), (4238, 4730)]