15891940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 36191232

約数和(自身を除く): 20299292

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1087, 1462, 2174, 2924, 3655, 4348, 5435, 7310, 10870, 14620, 18479, 21740, 36958, 46741, 73916, 92395, 93482, 184790, 186964, 233705, 369580, 467410, 794597, 934820, 1589194, 3178388, 3972985, 7945970, 15891940]

約数ペア:

[(1, 15891940), (2, 7945970), (4, 3972985), (5, 3178388), (10, 1589194), (17, 934820), (20, 794597), (34, 467410), (43, 369580), (68, 233705), (85, 186964), (86, 184790), (170, 93482), (172, 92395), (215, 73916), (340, 46741), (430, 36958), (731, 21740), (860, 18479), (1087, 14620), (1462, 10870), (2174, 7310), (2924, 5435), (3655, 4348)]