18991910

素因数分解:

$2^1\times 5^1\times 7^5\times {\mathrm{113}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 40235616

約数和(自身を除く): 21243706

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 113, 226, 245, 343, 490, 565, 686, 791, 1130, 1582, 1715, 2401, 3430, 3955, 4802, 5537, 7910, 11074, 12005, 16807, 24010, 27685, 33614, 38759, 55370, 77518, 84035, 168070, 193795, 271313, 387590, 542626, 1356565, 1899191, 2713130, 3798382, 9495955, 18991910]

約数ペア:

[(1, 18991910), (2, 9495955), (5, 3798382), (7, 2713130), (10, 1899191), (14, 1356565), (35, 542626), (49, 387590), (70, 271313), (98, 193795), (113, 168070), (226, 84035), (245, 77518), (343, 55370), (490, 38759), (565, 33614), (686, 27685), (791, 24010), (1130, 16807), (1582, 12005), (1715, 11074), (2401, 7910), (3430, 5537), (3955, 4802)]