30716020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 66382848

約数和(自身を除く): 35666828

約数列:

[1, 2, 4, 5, 10, 20, 71, 97, 142, 194, 223, 284, 355, 388, 446, 485, 710, 892, 970, 1115, 1420, 1940, 2230, 4460, 6887, 13774, 15833, 21631, 27548, 31666, 34435, 43262, 63332, 68870, 79165, 86524, 108155, 137740, 158330, 216310, 316660, 432620, 1535801, 3071602, 6143204, 7679005, 15358010, 30716020]

約数ペア:

[(1, 30716020), (2, 15358010), (4, 7679005), (5, 6143204), (10, 3071602), (20, 1535801), (71, 432620), (97, 316660), (142, 216310), (194, 158330), (223, 137740), (284, 108155), (355, 86524), (388, 79165), (446, 68870), (485, 63332), (710, 43262), (892, 34435), (970, 31666), (1115, 27548), (1420, 21631), (1940, 15833), (2230, 13774), (4460, 6887)]