28205720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41479}}^1$

素因数の和:41507

約数の個数: 32

約数和(自身を含む): 67197600

約数和(自身を除く): 38991880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 41479, 82958, 165916, 207395, 331832, 414790, 705143, 829580, 1410286, 1659160, 2820572, 3525715, 5641144, 7051430, 14102860, 28205720]

約数ペア:

[(1, 28205720), (2, 14102860), (4, 7051430), (5, 5641144), (8, 3525715), (10, 2820572), (17, 1659160), (20, 1410286), (34, 829580), (40, 705143), (68, 414790), (85, 331832), (136, 207395), (170, 165916), (340, 82958), (680, 41479)]