279401220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{221747}}^1$

素因数の和:221769

約数の個数: 72

約数和(自身を含む): 968595264

約数和(自身を除く): 689194044

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 221747, 443494, 665241, 886988, 1108735, 1330482, 1552229, 1995723, 2217470, 2660964, 3104458, 3326205, 3991446, 4434940, 4656687, 6208916, 6652410, 7761145, 7982892, 9313374, 9978615, 13304820, 13970061, 15522290, 18626748, 19957230, 23283435, 27940122, 31044580, 39914460, 46566870, 55880244, 69850305, 93133740, 139700610, 279401220]

約数ペア:

[(1, 279401220), (2, 139700610), (3, 93133740), (4, 69850305), (5, 55880244), (6, 46566870), (7, 39914460), (9, 31044580), (10, 27940122), (12, 23283435), (14, 19957230), (15, 18626748), (18, 15522290), (20, 13970061), (21, 13304820), (28, 9978615), (30, 9313374), (35, 7982892), (36, 7761145), (42, 6652410), (45, 6208916), (60, 4656687), (63, 4434940), (70, 3991446), (84, 3326205), (90, 3104458), (105, 2660964), (126, 2217470), (140, 1995723), (180, 1552229), (210, 1330482), (252, 1108735), (315, 886988), (420, 665241), (630, 443494), (1260, 221747)]