21591080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2659}}^1$

素因数の和:2706

約数の個数: 64

約数和(自身を含む): 57456000

約数和(自身を除く): 35864920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2659, 4060, 5318, 8120, 10636, 13295, 18613, 21272, 26590, 37226, 53180, 74452, 77111, 93065, 106360, 148904, 154222, 186130, 308444, 372260, 385555, 539777, 616888, 744520, 771110, 1079554, 1542220, 2159108, 2698885, 3084440, 4318216, 5397770, 10795540, 21591080]

約数ペア:

[(1, 21591080), (2, 10795540), (4, 5397770), (5, 4318216), (7, 3084440), (8, 2698885), (10, 2159108), (14, 1542220), (20, 1079554), (28, 771110), (29, 744520), (35, 616888), (40, 539777), (56, 385555), (58, 372260), (70, 308444), (116, 186130), (140, 154222), (145, 148904), (203, 106360), (232, 93065), (280, 77111), (290, 74452), (406, 53180), (580, 37226), (812, 26590), (1015, 21272), (1160, 18613), (1624, 13295), (2030, 10636), (2659, 8120), (4060, 5318)]