20277940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 49230720

約数和(自身を除く): 28952780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 43, 68, 73, 76, 85, 86, 95, 146, 170, 172, 190, 215, 292, 323, 340, 365, 380, 430, 646, 730, 731, 817, 860, 1241, 1292, 1387, 1460, 1462, 1615, 1634, 2482, 2774, 2924, 3139, 3230, 3268, 3655, 4085, 4964, 5548, 6205, 6278, 6460, 6935, 7310, 8170, 12410, 12556, 13870, 13889, 14620, 15695, 16340, 23579, 24820, 27740, 27778, 31390, 47158, 53363, 55556, 59641, 62780, 69445, 94316, 106726, 117895, 119282, 138890, 213452, 235790, 238564, 266815, 277780, 298205, 471580, 533630, 596410, 1013897, 1067260, 1192820, 2027794, 4055588, 5069485, 10138970, 20277940]

約数ペア:

[(1, 20277940), (2, 10138970), (4, 5069485), (5, 4055588), (10, 2027794), (17, 1192820), (19, 1067260), (20, 1013897), (34, 596410), (38, 533630), (43, 471580), (68, 298205), (73, 277780), (76, 266815), (85, 238564), (86, 235790), (95, 213452), (146, 138890), (170, 119282), (172, 117895), (190, 106726), (215, 94316), (292, 69445), (323, 62780), (340, 59641), (365, 55556), (380, 53363), (430, 47158), (646, 31390), (730, 27778), (731, 27740), (817, 24820), (860, 23579), (1241, 16340), (1292, 15695), (1387, 14620), (1460, 13889), (1462, 13870), (1615, 12556), (1634, 12410), (2482, 8170), (2774, 7310), (2924, 6935), (3139, 6460), (3230, 6278), (3268, 6205), (3655, 5548), (4085, 4964)]