655140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 1874880

約数和(自身を除く): 1219740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 179, 183, 244, 305, 358, 366, 537, 610, 716, 732, 895, 915, 1074, 1220, 1790, 1830, 2148, 2685, 3580, 3660, 5370, 10740, 10919, 21838, 32757, 43676, 54595, 65514, 109190, 131028, 163785, 218380, 327570, 655140]

約数ペア:

[(1, 655140), (2, 327570), (3, 218380), (4, 163785), (5, 131028), (6, 109190), (10, 65514), (12, 54595), (15, 43676), (20, 32757), (30, 21838), (60, 10919), (61, 10740), (122, 5370), (179, 3660), (183, 3580), (244, 2685), (305, 2148), (358, 1830), (366, 1790), (537, 1220), (610, 1074), (716, 915), (732, 895)]