21698810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1297}}^1$

素因数の和:1550

約数の個数: 32

約数和(自身を含む): 44858880

約数和(自身を除く): 23160070

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 239, 478, 1195, 1297, 1673, 2390, 2594, 3346, 6485, 8365, 9079, 12970, 16730, 18158, 45395, 90790, 309983, 619966, 1549915, 2169881, 3099830, 4339762, 10849405, 21698810]

約数ペア:

[(1, 21698810), (2, 10849405), (5, 4339762), (7, 3099830), (10, 2169881), (14, 1549915), (35, 619966), (70, 309983), (239, 90790), (478, 45395), (1195, 18158), (1297, 16730), (1673, 12970), (2390, 9079), (2594, 8365), (3346, 6485)]