21912765

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1153}}^1$

素因数の和:1349

約数の個数: 32

約数和(自身を含む): 40325376

約数和(自身を除く): 18412611

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 181, 543, 905, 1153, 1267, 2715, 3459, 3801, 5765, 6335, 8071, 17295, 19005, 24213, 40355, 121065, 208693, 626079, 1043465, 1460851, 3130395, 4382553, 7304255, 21912765]

約数ペア:

[(1, 21912765), (3, 7304255), (5, 4382553), (7, 3130395), (15, 1460851), (21, 1043465), (35, 626079), (105, 208693), (181, 121065), (543, 40355), (905, 24213), (1153, 19005), (1267, 17295), (2715, 8071), (3459, 6335), (3801, 5765)]