177798980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{2617}}^1$

素因数の和:2748

約数の個数: 48

約数和(自身を含む): 387045120

約数和(自身を除く): 209246140

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 316, 395, 430, 790, 860, 1580, 2617, 3397, 5234, 6794, 10468, 13085, 13588, 16985, 26170, 33970, 52340, 67940, 112531, 206743, 225062, 413486, 450124, 562655, 826972, 1033715, 1125310, 2067430, 2250620, 4134860, 8889949, 17779898, 35559796, 44449745, 88899490, 177798980]

約数ペア:

[(1, 177798980), (2, 88899490), (4, 44449745), (5, 35559796), (10, 17779898), (20, 8889949), (43, 4134860), (79, 2250620), (86, 2067430), (158, 1125310), (172, 1033715), (215, 826972), (316, 562655), (395, 450124), (430, 413486), (790, 225062), (860, 206743), (1580, 112531), (2617, 67940), (3397, 52340), (5234, 33970), (6794, 26170), (10468, 16985), (13085, 13588)]