21655060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1163}}^1$

素因数の和:1205

約数の個数: 72

約数和(自身を含む): 55732320

約数和(自身を除く): 34077260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 980, 1163, 1330, 1862, 2326, 2660, 3724, 4652, 4655, 5815, 8141, 9310, 11630, 16282, 18620, 22097, 23260, 32564, 40705, 44194, 56987, 81410, 88388, 110485, 113974, 154679, 162820, 220970, 227948, 284935, 309358, 441940, 569870, 618716, 773395, 1082753, 1139740, 1546790, 2165506, 3093580, 4331012, 5413765, 10827530, 21655060]

約数ペア:

[(1, 21655060), (2, 10827530), (4, 5413765), (5, 4331012), (7, 3093580), (10, 2165506), (14, 1546790), (19, 1139740), (20, 1082753), (28, 773395), (35, 618716), (38, 569870), (49, 441940), (70, 309358), (76, 284935), (95, 227948), (98, 220970), (133, 162820), (140, 154679), (190, 113974), (196, 110485), (245, 88388), (266, 81410), (380, 56987), (490, 44194), (532, 40705), (665, 32564), (931, 23260), (980, 22097), (1163, 18620), (1330, 16282), (1862, 11630), (2326, 9310), (2660, 8141), (3724, 5815), (4652, 4655)]