20014780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 46802448

約数和(自身を除く): 26787668

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 43, 68, 74, 85, 86, 148, 170, 172, 185, 215, 340, 370, 430, 629, 731, 740, 860, 1258, 1369, 1462, 1591, 2516, 2738, 2924, 3145, 3182, 3655, 5476, 6290, 6364, 6845, 7310, 7955, 12580, 13690, 14620, 15910, 23273, 27047, 27380, 31820, 46546, 54094, 58867, 93092, 108188, 116365, 117734, 135235, 232730, 235468, 270470, 294335, 465460, 540940, 588670, 1000739, 1177340, 2001478, 4002956, 5003695, 10007390, 20014780]

約数ペア:

[(1, 20014780), (2, 10007390), (4, 5003695), (5, 4002956), (10, 2001478), (17, 1177340), (20, 1000739), (34, 588670), (37, 540940), (43, 465460), (68, 294335), (74, 270470), (85, 235468), (86, 232730), (148, 135235), (170, 117734), (172, 116365), (185, 108188), (215, 93092), (340, 58867), (370, 54094), (430, 46546), (629, 31820), (731, 27380), (740, 27047), (860, 23273), (1258, 15910), (1369, 14620), (1462, 13690), (1591, 12580), (2516, 7955), (2738, 7310), (2924, 6845), (3145, 6364), (3182, 6290), (3655, 5476)]