21097740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4451}}^1$

素因数の和:4542

約数の個数: 48

約数和(自身を含む): 59834880

約数和(自身を除く): 38737140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4451, 4740, 8902, 13353, 17804, 22255, 26706, 44510, 53412, 66765, 89020, 133530, 267060, 351629, 703258, 1054887, 1406516, 1758145, 2109774, 3516290, 4219548, 5274435, 7032580, 10548870, 21097740]

約数ペア:

[(1, 21097740), (2, 10548870), (3, 7032580), (4, 5274435), (5, 4219548), (6, 3516290), (10, 2109774), (12, 1758145), (15, 1406516), (20, 1054887), (30, 703258), (60, 351629), (79, 267060), (158, 133530), (237, 89020), (316, 66765), (395, 53412), (474, 44510), (790, 26706), (948, 22255), (1185, 17804), (1580, 13353), (2370, 8902), (4451, 4740)]