440960

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:85

約数の個数: 64

約数和(自身を含む): 1156680

約数和(自身を除く): 715720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 64, 65, 80, 104, 106, 128, 130, 160, 208, 212, 260, 265, 320, 416, 424, 520, 530, 640, 689, 832, 848, 1040, 1060, 1378, 1664, 1696, 2080, 2120, 2756, 3392, 3445, 4160, 4240, 5512, 6784, 6890, 8320, 8480, 11024, 13780, 16960, 22048, 27560, 33920, 44096, 55120, 88192, 110240, 220480, 440960]

約数ペア:

[(1, 440960), (2, 220480), (4, 110240), (5, 88192), (8, 55120), (10, 44096), (13, 33920), (16, 27560), (20, 22048), (26, 16960), (32, 13780), (40, 11024), (52, 8480), (53, 8320), (64, 6890), (65, 6784), (80, 5512), (104, 4240), (106, 4160), (128, 3445), (130, 3392), (160, 2756), (208, 2120), (212, 2080), (260, 1696), (265, 1664), (320, 1378), (416, 1060), (424, 1040), (520, 848), (530, 832), (640, 689)]