18391280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13523}}^1$

素因数の和:13553

約数の個数: 40

約数和(自身を含む): 45278352

約数和(自身を除く): 26887072

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13523, 27046, 54092, 67615, 108184, 135230, 216368, 229891, 270460, 459782, 540920, 919564, 1081840, 1149455, 1839128, 2298910, 3678256, 4597820, 9195640, 18391280]

約数ペア:

[(1, 18391280), (2, 9195640), (4, 4597820), (5, 3678256), (8, 2298910), (10, 1839128), (16, 1149455), (17, 1081840), (20, 919564), (34, 540920), (40, 459782), (68, 270460), (80, 229891), (85, 216368), (136, 135230), (170, 108184), (272, 67615), (340, 54092), (680, 27046), (1360, 13523)]