21554820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17107}}^1$

素因数の和:17129

約数の個数: 72

約数和(自身を含む): 74727744

約数和(自身を除く): 53172924

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, 17107, 34214, 51321, 68428, 85535, 102642, 119749, 153963, 171070, 205284, 239498, 256605, 307926, 342140, 359247, 478996, 513210, 598745, 615852, 718494, 769815, 1026420, 1077741, 1197490, 1436988, 1539630, 1796235, 2155482, 2394980, 3079260, 3592470, 4310964, 5388705, 7184940, 10777410, 21554820]

約数ペア:

[(1, 21554820), (2, 10777410), (3, 7184940), (4, 5388705), (5, 4310964), (6, 3592470), (7, 3079260), (9, 2394980), (10, 2155482), (12, 1796235), (14, 1539630), (15, 1436988), (18, 1197490), (20, 1077741), (21, 1026420), (28, 769815), (30, 718494), (35, 615852), (36, 598745), (42, 513210), (45, 478996), (60, 359247), (63, 342140), (70, 307926), (84, 256605), (90, 239498), (105, 205284), (126, 171070), (140, 153963), (180, 119749), (210, 102642), (252, 85535), (315, 68428), (420, 51321), (630, 34214), (1260, 17107)]