21716910

素因数分解:

$2^1\times 3^8\times 5^1\times {\mathrm{331}}^1$

素因数の和:362

約数の個数: 72

約数和(自身を含む): 58809816

約数和(自身を除く): 37092906

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 331, 405, 486, 662, 729, 810, 993, 1215, 1458, 1655, 1986, 2187, 2430, 2979, 3310, 3645, 4374, 4965, 5958, 6561, 7290, 8937, 9930, 10935, 13122, 14895, 17874, 21870, 26811, 29790, 32805, 44685, 53622, 65610, 80433, 89370, 134055, 160866, 241299, 268110, 402165, 482598, 723897, 804330, 1206495, 1447794, 2171691, 2412990, 3619485, 4343382, 7238970, 10858455, 21716910]

約数ペア:

[(1, 21716910), (2, 10858455), (3, 7238970), (5, 4343382), (6, 3619485), (9, 2412990), (10, 2171691), (15, 1447794), (18, 1206495), (27, 804330), (30, 723897), (45, 482598), (54, 402165), (81, 268110), (90, 241299), (135, 160866), (162, 134055), (243, 89370), (270, 80433), (331, 65610), (405, 53622), (486, 44685), (662, 32805), (729, 29790), (810, 26811), (993, 21870), (1215, 17874), (1458, 14895), (1655, 13122), (1986, 10935), (2187, 9930), (2430, 8937), (2979, 7290), (3310, 6561), (3645, 5958), (4374, 4965)]