157957340

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 338083200

約数和(自身を除く): 180125860

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 257, 316, 389, 395, 514, 778, 790, 1028, 1285, 1556, 1580, 1945, 2570, 3890, 5140, 7780, 20303, 30731, 40606, 61462, 81212, 99973, 101515, 122924, 153655, 199946, 203030, 307310, 399892, 406060, 499865, 614620, 999730, 1999460, 7897867, 15795734, 31591468, 39489335, 78978670, 157957340]

約数ペア:

[(1, 157957340), (2, 78978670), (4, 39489335), (5, 31591468), (10, 15795734), (20, 7897867), (79, 1999460), (158, 999730), (257, 614620), (316, 499865), (389, 406060), (395, 399892), (514, 307310), (778, 203030), (790, 199946), (1028, 153655), (1285, 122924), (1556, 101515), (1580, 99973), (1945, 81212), (2570, 61462), (3890, 40606), (5140, 30731), (7780, 20303)]