159403880

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{6217}}^1$

素因数の和:6869

約数の個数: 32

約数和(自身を含む): 359276040

約数和(自身を除く): 199872160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 1282, 2564, 3205, 5128, 6217, 6410, 12434, 12820, 24868, 25640, 31085, 49736, 62170, 124340, 248680, 3985097, 7970194, 15940388, 19925485, 31880776, 39850970, 79701940, 159403880]

約数ペア:

[(1, 159403880), (2, 79701940), (4, 39850970), (5, 31880776), (8, 19925485), (10, 15940388), (20, 7970194), (40, 3985097), (641, 248680), (1282, 124340), (2564, 62170), (3205, 49736), (5128, 31085), (6217, 25640), (6410, 24868), (12434, 12820)]