21295980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{349}}^1$

素因数の和:480

約数の個数: 96

約数和(自身を含む): 67032000

約数和(自身を除く): 45736020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 113, 135, 180, 226, 270, 339, 349, 452, 540, 565, 678, 698, 1017, 1047, 1130, 1356, 1396, 1695, 1745, 2034, 2094, 2260, 3051, 3141, 3390, 3490, 4068, 4188, 5085, 5235, 6102, 6282, 6780, 6980, 9423, 10170, 10470, 12204, 12564, 15255, 15705, 18846, 20340, 20940, 30510, 31410, 37692, 39437, 47115, 61020, 62820, 78874, 94230, 118311, 157748, 188460, 197185, 236622, 354933, 394370, 473244, 591555, 709866, 788740, 1064799, 1183110, 1419732, 1774665, 2129598, 2366220, 3549330, 4259196, 5323995, 7098660, 10647990, 21295980]

約数ペア:

[(1, 21295980), (2, 10647990), (3, 7098660), (4, 5323995), (5, 4259196), (6, 3549330), (9, 2366220), (10, 2129598), (12, 1774665), (15, 1419732), (18, 1183110), (20, 1064799), (27, 788740), (30, 709866), (36, 591555), (45, 473244), (54, 394370), (60, 354933), (90, 236622), (108, 197185), (113, 188460), (135, 157748), (180, 118311), (226, 94230), (270, 78874), (339, 62820), (349, 61020), (452, 47115), (540, 39437), (565, 37692), (678, 31410), (698, 30510), (1017, 20940), (1047, 20340), (1130, 18846), (1356, 15705), (1396, 15255), (1695, 12564), (1745, 12204), (2034, 10470), (2094, 10170), (2260, 9423), (3051, 6980), (3141, 6780), (3390, 6282), (3490, 6102), (4068, 5235), (4188, 5085)]