281649105

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1999}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 509184000

約数和(自身を除く): 227534895

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 101, 155, 279, 303, 465, 505, 909, 1395, 1515, 1999, 3131, 4545, 5997, 9393, 9995, 15655, 17991, 28179, 29985, 46965, 61969, 89955, 140895, 185907, 201899, 309845, 557721, 605697, 929535, 1009495, 1817091, 2788605, 3028485, 6258869, 9085455, 18776607, 31294345, 56329821, 93883035, 281649105]

約数ペア:

[(1, 281649105), (3, 93883035), (5, 56329821), (9, 31294345), (15, 18776607), (31, 9085455), (45, 6258869), (93, 3028485), (101, 2788605), (155, 1817091), (279, 1009495), (303, 929535), (465, 605697), (505, 557721), (909, 309845), (1395, 201899), (1515, 185907), (1999, 140895), (3131, 89955), (4545, 61969), (5997, 46965), (9393, 29985), (9995, 28179), (15655, 17991)]