21990690

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1597}}^1$

素因数の和:1633

約数の個数: 80

約数和(自身を含む): 62647992

約数和(自身を除く): 40657302

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 27, 30, 34, 45, 51, 54, 81, 85, 90, 102, 135, 153, 162, 170, 255, 270, 306, 405, 459, 510, 765, 810, 918, 1377, 1530, 1597, 2295, 2754, 3194, 4590, 4791, 6885, 7985, 9582, 13770, 14373, 15970, 23955, 27149, 28746, 43119, 47910, 54298, 71865, 81447, 86238, 129357, 135745, 143730, 162894, 215595, 244341, 258714, 271490, 407235, 431190, 488682, 646785, 733023, 814470, 1221705, 1293570, 1466046, 2199069, 2443410, 3665115, 4398138, 7330230, 10995345, 21990690]

約数ペア:

[(1, 21990690), (2, 10995345), (3, 7330230), (5, 4398138), (6, 3665115), (9, 2443410), (10, 2199069), (15, 1466046), (17, 1293570), (18, 1221705), (27, 814470), (30, 733023), (34, 646785), (45, 488682), (51, 431190), (54, 407235), (81, 271490), (85, 258714), (90, 244341), (102, 215595), (135, 162894), (153, 143730), (162, 135745), (170, 129357), (255, 86238), (270, 81447), (306, 71865), (405, 54298), (459, 47910), (510, 43119), (765, 28746), (810, 27149), (918, 23955), (1377, 15970), (1530, 14373), (1597, 13770), (2295, 9582), (2754, 7985), (3194, 6885), (4590, 4791)]