201408640

素因数分解:

$2^7\times 5^1\times {\mathrm{389}}^1\times {\mathrm{809}}^1$

素因数の和:1217

約数の個数: 64

約数和(自身を含む): 483327000

約数和(自身を除く): 281918360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 389, 640, 778, 809, 1556, 1618, 1945, 3112, 3236, 3890, 4045, 6224, 6472, 7780, 8090, 12448, 12944, 15560, 16180, 24896, 25888, 31120, 32360, 49792, 51776, 62240, 64720, 103552, 124480, 129440, 248960, 258880, 314701, 517760, 629402, 1258804, 1573505, 2517608, 3147010, 5035216, 6294020, 10070432, 12588040, 20140864, 25176080, 40281728, 50352160, 100704320, 201408640]

約数ペア:

[(1, 201408640), (2, 100704320), (4, 50352160), (5, 40281728), (8, 25176080), (10, 20140864), (16, 12588040), (20, 10070432), (32, 6294020), (40, 5035216), (64, 3147010), (80, 2517608), (128, 1573505), (160, 1258804), (320, 629402), (389, 517760), (640, 314701), (778, 258880), (809, 248960), (1556, 129440), (1618, 124480), (1945, 103552), (3112, 64720), (3236, 62240), (3890, 51776), (4045, 49792), (6224, 32360), (6472, 31120), (7780, 25888), (8090, 24896), (12448, 16180), (12944, 15560)]