56481620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1993}}^1$

素因数の和:2124

約数の個数: 48

約数和(自身を含む): 128971920

約数和(自身を除く): 72490300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 1993, 2180, 2834, 3986, 5668, 7085, 7972, 9965, 14170, 19930, 25909, 28340, 39860, 51818, 103636, 129545, 217237, 259090, 434474, 518180, 868948, 1086185, 2172370, 2824081, 4344740, 5648162, 11296324, 14120405, 28240810, 56481620]

約数ペア:

[(1, 56481620), (2, 28240810), (4, 14120405), (5, 11296324), (10, 5648162), (13, 4344740), (20, 2824081), (26, 2172370), (52, 1086185), (65, 868948), (109, 518180), (130, 434474), (218, 259090), (260, 217237), (436, 129545), (545, 103636), (1090, 51818), (1417, 39860), (1993, 28340), (2180, 25909), (2834, 19930), (3986, 14170), (5668, 9965), (7085, 7972)]