128401120

素因数分解:

$2^5\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2063}}^1$

素因数の和:2467

約数の個数: 48

約数和(自身を含む): 304274880

約数和(自身を除く): 175873760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 389, 778, 1556, 1945, 2063, 3112, 3890, 4126, 6224, 7780, 8252, 10315, 12448, 15560, 16504, 20630, 31120, 33008, 41260, 62240, 66016, 82520, 165040, 330080, 802507, 1605014, 3210028, 4012535, 6420056, 8025070, 12840112, 16050140, 25680224, 32100280, 64200560, 128401120]

約数ペア:

[(1, 128401120), (2, 64200560), (4, 32100280), (5, 25680224), (8, 16050140), (10, 12840112), (16, 8025070), (20, 6420056), (32, 4012535), (40, 3210028), (80, 1605014), (160, 802507), (389, 330080), (778, 165040), (1556, 82520), (1945, 66016), (2063, 62240), (3112, 41260), (3890, 33008), (4126, 31120), (6224, 20630), (7780, 16504), (8252, 15560), (10315, 12448)]