28681720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{42179}}^1$

素因数の和:42207

約数の個数: 32

約数和(自身を含む): 68331600

約数和(自身を除く): 39649880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 42179, 84358, 168716, 210895, 337432, 421790, 717043, 843580, 1434086, 1687160, 2868172, 3585215, 5736344, 7170430, 14340860, 28681720]

約数ペア:

[(1, 28681720), (2, 14340860), (4, 7170430), (5, 5736344), (8, 3585215), (10, 2868172), (17, 1687160), (20, 1434086), (34, 843580), (40, 717043), (68, 421790), (85, 337432), (136, 210895), (170, 168716), (340, 84358), (680, 42179)]