12891440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9479}}^1$

素因数の和:9509

約数の個数: 40

約数和(自身を含む): 31739040

約数和(自身を除く): 18847600

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 9479, 18958, 37916, 47395, 75832, 94790, 151664, 161143, 189580, 322286, 379160, 644572, 758320, 805715, 1289144, 1611430, 2578288, 3222860, 6445720, 12891440]

約数ペア:

[(1, 12891440), (2, 6445720), (4, 3222860), (5, 2578288), (8, 1611430), (10, 1289144), (16, 805715), (17, 758320), (20, 644572), (34, 379160), (40, 322286), (68, 189580), (80, 161143), (85, 151664), (136, 94790), (170, 75832), (272, 47395), (340, 37916), (680, 18958), (1360, 9479)]