21249930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{103}}^1$

素因数の和:172

約数の個数: 96

約数和(自身を含む): 57972096

約数和(自身を除く): 36722166

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 103, 115, 130, 138, 195, 206, 230, 299, 309, 345, 390, 515, 529, 598, 618, 690, 897, 1030, 1058, 1339, 1495, 1545, 1587, 1794, 2369, 2645, 2678, 2990, 3090, 3174, 4017, 4485, 4738, 5290, 6695, 6877, 7107, 7935, 8034, 8970, 11845, 13390, 13754, 14214, 15870, 20085, 20631, 23690, 30797, 34385, 35535, 40170, 41262, 54487, 61594, 68770, 71070, 92391, 103155, 108974, 153985, 163461, 184782, 206310, 272435, 307970, 326922, 461955, 544870, 708331, 817305, 923910, 1416662, 1634610, 2124993, 3541655, 4249986, 7083310, 10624965, 21249930]

約数ペア:

[(1, 21249930), (2, 10624965), (3, 7083310), (5, 4249986), (6, 3541655), (10, 2124993), (13, 1634610), (15, 1416662), (23, 923910), (26, 817305), (30, 708331), (39, 544870), (46, 461955), (65, 326922), (69, 307970), (78, 272435), (103, 206310), (115, 184782), (130, 163461), (138, 153985), (195, 108974), (206, 103155), (230, 92391), (299, 71070), (309, 68770), (345, 61594), (390, 54487), (515, 41262), (529, 40170), (598, 35535), (618, 34385), (690, 30797), (897, 23690), (1030, 20631), (1058, 20085), (1339, 15870), (1495, 14214), (1545, 13754), (1587, 13390), (1794, 11845), (2369, 8970), (2645, 8034), (2678, 7935), (2990, 7107), (3090, 6877), (3174, 6695), (4017, 5290), (4485, 4738)]