31991360

素因数分解:

$2^6\times 5^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:663

約数の個数: 56

約数和(自身を含む): 76672440

約数和(自身を除く): 44681080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 257, 320, 389, 514, 778, 1028, 1285, 1556, 1945, 2056, 2570, 3112, 3890, 4112, 5140, 6224, 7780, 8224, 10280, 12448, 15560, 16448, 20560, 24896, 31120, 41120, 62240, 82240, 99973, 124480, 199946, 399892, 499865, 799784, 999730, 1599568, 1999460, 3199136, 3998920, 6398272, 7997840, 15995680, 31991360]

約数ペア:

[(1, 31991360), (2, 15995680), (4, 7997840), (5, 6398272), (8, 3998920), (10, 3199136), (16, 1999460), (20, 1599568), (32, 999730), (40, 799784), (64, 499865), (80, 399892), (160, 199946), (257, 124480), (320, 99973), (389, 82240), (514, 62240), (778, 41120), (1028, 31120), (1285, 24896), (1556, 20560), (1945, 16448), (2056, 15560), (2570, 12448), (3112, 10280), (3890, 8224), (4112, 7780), (5140, 6224)]