678984760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{52553}}^1$

素因数の和:52600

約数の個数: 64

約数和(自身を含む): 1702749600

約数和(自身を除く): 1023764840

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6460, 12920, 52553, 105106, 210212, 262765, 420424, 525530, 893401, 998507, 1051060, 1786802, 1997014, 2102120, 3573604, 3994028, 4467005, 4992535, 7147208, 7988056, 8934010, 9985070, 16974619, 17868020, 19970140, 33949238, 35736040, 39940280, 67898476, 84873095, 135796952, 169746190, 339492380, 678984760]

約数ペア:

[(1, 678984760), (2, 339492380), (4, 169746190), (5, 135796952), (8, 84873095), (10, 67898476), (17, 39940280), (19, 35736040), (20, 33949238), (34, 19970140), (38, 17868020), (40, 16974619), (68, 9985070), (76, 8934010), (85, 7988056), (95, 7147208), (136, 4992535), (152, 4467005), (170, 3994028), (190, 3573604), (323, 2102120), (340, 1997014), (380, 1786802), (646, 1051060), (680, 998507), (760, 893401), (1292, 525530), (1615, 420424), (2584, 262765), (3230, 210212), (6460, 105106), (12920, 52553)]