21519856

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2441}}^1$

素因数の和:2497

約数の個数: 40

約数和(自身を含む): 45421200

約数和(自身を除く): 23901344

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 116, 152, 232, 304, 464, 551, 1102, 2204, 2441, 4408, 4882, 8816, 9764, 19528, 39056, 46379, 70789, 92758, 141578, 185516, 283156, 371032, 566312, 742064, 1132624, 1344991, 2689982, 5379964, 10759928, 21519856]

約数ペア:

[(1, 21519856), (2, 10759928), (4, 5379964), (8, 2689982), (16, 1344991), (19, 1132624), (29, 742064), (38, 566312), (58, 371032), (76, 283156), (116, 185516), (152, 141578), (232, 92758), (304, 70789), (464, 46379), (551, 39056), (1102, 19528), (2204, 9764), (2441, 8816), (4408, 4882)]