178701640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{857}}^1$

素因数の和:1282

約数の個数: 64

約数和(自身を含む): 434594160

約数和(自身を除く): 255892520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 401, 520, 802, 857, 1604, 1714, 2005, 3208, 3428, 4010, 4285, 5213, 6856, 8020, 8570, 10426, 11141, 16040, 17140, 20852, 22282, 26065, 34280, 41704, 44564, 52130, 55705, 89128, 104260, 111410, 208520, 222820, 343657, 445640, 687314, 1374628, 1718285, 2749256, 3436570, 4467541, 6873140, 8935082, 13746280, 17870164, 22337705, 35740328, 44675410, 89350820, 178701640]

約数ペア:

[(1, 178701640), (2, 89350820), (4, 44675410), (5, 35740328), (8, 22337705), (10, 17870164), (13, 13746280), (20, 8935082), (26, 6873140), (40, 4467541), (52, 3436570), (65, 2749256), (104, 1718285), (130, 1374628), (260, 687314), (401, 445640), (520, 343657), (802, 222820), (857, 208520), (1604, 111410), (1714, 104260), (2005, 89128), (3208, 55705), (3428, 52130), (4010, 44564), (4285, 41704), (5213, 34280), (6856, 26065), (8020, 22282), (8570, 20852), (10426, 17140), (11141, 16040)]