20151970

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{367}}^1$

素因数の和:427

約数の個数: 48

約数和(自身を含む): 40671360

約数和(自身を除く): 20519390

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 289, 323, 367, 578, 646, 734, 1445, 1615, 1835, 2890, 3230, 3670, 5491, 6239, 6973, 10982, 12478, 13946, 27455, 31195, 34865, 54910, 62390, 69730, 106063, 118541, 212126, 237082, 530315, 592705, 1060630, 1185410, 2015197, 4030394, 10075985, 20151970]

約数ペア:

[(1, 20151970), (2, 10075985), (5, 4030394), (10, 2015197), (17, 1185410), (19, 1060630), (34, 592705), (38, 530315), (85, 237082), (95, 212126), (170, 118541), (190, 106063), (289, 69730), (323, 62390), (367, 54910), (578, 34865), (646, 31195), (734, 27455), (1445, 13946), (1615, 12478), (1835, 10982), (2890, 6973), (3230, 6239), (3670, 5491)]