78865720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{115979}}^1$

素因数の和:116007

約数の個数: 32

約数和(自身を含む): 187887600

約数和(自身を除く): 109021880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 115979, 231958, 463916, 579895, 927832, 1159790, 1971643, 2319580, 3943286, 4639160, 7886572, 9858215, 15773144, 19716430, 39432860, 78865720]

約数ペア:

[(1, 78865720), (2, 39432860), (4, 19716430), (5, 15773144), (8, 9858215), (10, 7886572), (17, 4639160), (20, 3943286), (34, 2319580), (40, 1971643), (68, 1159790), (85, 927832), (136, 579895), (170, 463916), (340, 231958), (680, 115979)]