644480

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:91

約数の個数: 64

約数和(自身を含む): 1652400

約数和(自身を除く): 1007920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 53, 64, 76, 80, 95, 106, 128, 152, 160, 190, 212, 265, 304, 320, 380, 424, 530, 608, 640, 760, 848, 1007, 1060, 1216, 1520, 1696, 2014, 2120, 2432, 3040, 3392, 4028, 4240, 5035, 6080, 6784, 8056, 8480, 10070, 12160, 16112, 16960, 20140, 32224, 33920, 40280, 64448, 80560, 128896, 161120, 322240, 644480]

約数ペア:

[(1, 644480), (2, 322240), (4, 161120), (5, 128896), (8, 80560), (10, 64448), (16, 40280), (19, 33920), (20, 32224), (32, 20140), (38, 16960), (40, 16112), (53, 12160), (64, 10070), (76, 8480), (80, 8056), (95, 6784), (106, 6080), (128, 5035), (152, 4240), (160, 4028), (190, 3392), (212, 3040), (265, 2432), (304, 2120), (320, 2014), (380, 1696), (424, 1520), (530, 1216), (608, 1060), (640, 1007), (760, 848)]