254841680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{431}}^1$

素因数の和:852

約数の個数: 80

約数和(自身を含む): 626745600

約数和(自身を除く): 371903920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 389, 431, 760, 778, 862, 1520, 1556, 1724, 1945, 2155, 3112, 3448, 3890, 4310, 6224, 6896, 7391, 7780, 8189, 8620, 14782, 15560, 16378, 17240, 29564, 31120, 32756, 34480, 36955, 40945, 59128, 65512, 73910, 81890, 118256, 131024, 147820, 163780, 167659, 295640, 327560, 335318, 591280, 655120, 670636, 838295, 1341272, 1676590, 2682544, 3185521, 3353180, 6371042, 6706360, 12742084, 13412720, 15927605, 25484168, 31855210, 50968336, 63710420, 127420840, 254841680]

約数ペア:

[(1, 254841680), (2, 127420840), (4, 63710420), (5, 50968336), (8, 31855210), (10, 25484168), (16, 15927605), (19, 13412720), (20, 12742084), (38, 6706360), (40, 6371042), (76, 3353180), (80, 3185521), (95, 2682544), (152, 1676590), (190, 1341272), (304, 838295), (380, 670636), (389, 655120), (431, 591280), (760, 335318), (778, 327560), (862, 295640), (1520, 167659), (1556, 163780), (1724, 147820), (1945, 131024), (2155, 118256), (3112, 81890), (3448, 73910), (3890, 65512), (4310, 59128), (6224, 40945), (6896, 36955), (7391, 34480), (7780, 32756), (8189, 31120), (8620, 29564), (14782, 17240), (15560, 16378)]