19800010

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{2777}}^1$

素因数の和:2838

約数の個数: 32

約数和(自身を含む): 38403072

約数和(自身を除く): 18603062

約数列:

[1, 2, 5, 10, 23, 31, 46, 62, 115, 155, 230, 310, 713, 1426, 2777, 3565, 5554, 7130, 13885, 27770, 63871, 86087, 127742, 172174, 319355, 430435, 638710, 860870, 1980001, 3960002, 9900005, 19800010]

約数ペア:

[(1, 19800010), (2, 9900005), (5, 3960002), (10, 1980001), (23, 860870), (31, 638710), (46, 430435), (62, 319355), (115, 172174), (155, 127742), (230, 86087), (310, 63871), (713, 27770), (1426, 13885), (2777, 7130), (3565, 5554)]