400200640

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{25523}}^1$

素因数の和:25554

約数の個数: 84

約数和(自身を含む): 1108609416

約数和(自身を除く): 708408776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 784, 980, 1120, 1568, 1960, 2240, 3136, 3920, 7840, 15680, 25523, 51046, 102092, 127615, 178661, 204184, 255230, 357322, 408368, 510460, 714644, 816736, 893305, 1020920, 1250627, 1429288, 1633472, 1786610, 2041840, 2501254, 2858576, 3573220, 4083680, 5002508, 5717152, 6253135, 7146440, 8167360, 10005016, 11434304, 12506270, 14292880, 20010032, 25012540, 28585760, 40020064, 50025080, 57171520, 80040128, 100050160, 200100320, 400200640]

約数ペア:

[(1, 400200640), (2, 200100320), (4, 100050160), (5, 80040128), (7, 57171520), (8, 50025080), (10, 40020064), (14, 28585760), (16, 25012540), (20, 20010032), (28, 14292880), (32, 12506270), (35, 11434304), (40, 10005016), (49, 8167360), (56, 7146440), (64, 6253135), (70, 5717152), (80, 5002508), (98, 4083680), (112, 3573220), (140, 2858576), (160, 2501254), (196, 2041840), (224, 1786610), (245, 1633472), (280, 1429288), (320, 1250627), (392, 1020920), (448, 893305), (490, 816736), (560, 714644), (784, 510460), (980, 408368), (1120, 357322), (1568, 255230), (1960, 204184), (2240, 178661), (3136, 127615), (3920, 102092), (7840, 51046), (15680, 25523)]