1998180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{653}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 6427512

約数和(自身を除く): 4429332

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 653, 765, 1020, 1306, 1530, 1959, 2612, 3060, 3265, 3918, 5877, 6530, 7836, 9795, 11101, 11754, 13060, 19590, 22202, 23508, 29385, 33303, 39180, 44404, 55505, 58770, 66606, 99909, 111010, 117540, 133212, 166515, 199818, 222020, 333030, 399636, 499545, 666060, 999090, 1998180]

約数ペア:

[(1, 1998180), (2, 999090), (3, 666060), (4, 499545), (5, 399636), (6, 333030), (9, 222020), (10, 199818), (12, 166515), (15, 133212), (17, 117540), (18, 111010), (20, 99909), (30, 66606), (34, 58770), (36, 55505), (45, 44404), (51, 39180), (60, 33303), (68, 29385), (85, 23508), (90, 22202), (102, 19590), (153, 13060), (170, 11754), (180, 11101), (204, 9795), (255, 7836), (306, 6530), (340, 5877), (510, 3918), (612, 3265), (653, 3060), (765, 2612), (1020, 1959), (1306, 1530)]