9920180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 22317120

約数和(自身を除く): 12396940

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 179, 326, 340, 358, 652, 716, 815, 895, 1630, 1790, 2771, 3043, 3260, 3580, 5542, 6086, 11084, 12172, 13855, 15215, 27710, 29177, 30430, 55420, 58354, 60860, 116708, 145885, 291770, 496009, 583540, 992018, 1984036, 2480045, 4960090, 9920180]

約数ペア:

[(1, 9920180), (2, 4960090), (4, 2480045), (5, 1984036), (10, 992018), (17, 583540), (20, 496009), (34, 291770), (68, 145885), (85, 116708), (163, 60860), (170, 58354), (179, 55420), (326, 30430), (340, 29177), (358, 27710), (652, 15215), (716, 13855), (815, 12172), (895, 11084), (1630, 6086), (1790, 5542), (2771, 3580), (3043, 3260)]