21085190

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1163}}^1$

素因数の和:1221

約数の個数: 48

約数和(自身を含む): 45382032

約数和(自身を除く): 24296842

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 49, 70, 74, 98, 185, 245, 259, 370, 490, 518, 1163, 1295, 1813, 2326, 2590, 3626, 5815, 8141, 9065, 11630, 16282, 18130, 40705, 43031, 56987, 81410, 86062, 113974, 215155, 284935, 301217, 430310, 569870, 602434, 1506085, 2108519, 3012170, 4217038, 10542595, 21085190]

約数ペア:

[(1, 21085190), (2, 10542595), (5, 4217038), (7, 3012170), (10, 2108519), (14, 1506085), (35, 602434), (37, 569870), (49, 430310), (70, 301217), (74, 284935), (98, 215155), (185, 113974), (245, 86062), (259, 81410), (370, 56987), (490, 43031), (518, 40705), (1163, 18130), (1295, 16282), (1813, 11630), (2326, 9065), (2590, 8141), (3626, 5815)]