17985915

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{461}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 34040160

約数和(自身を除く): 16054245

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 289, 459, 461, 765, 867, 1383, 1445, 2295, 2305, 2601, 4149, 4335, 6915, 7803, 7837, 12447, 13005, 20745, 23511, 39015, 39185, 62235, 70533, 117555, 133229, 211599, 352665, 399687, 666145, 1057995, 1199061, 1998435, 3597183, 5995305, 17985915]

約数ペア:

[(1, 17985915), (3, 5995305), (5, 3597183), (9, 1998435), (15, 1199061), (17, 1057995), (27, 666145), (45, 399687), (51, 352665), (85, 211599), (135, 133229), (153, 117555), (255, 70533), (289, 62235), (459, 39185), (461, 39015), (765, 23511), (867, 20745), (1383, 13005), (1445, 12447), (2295, 7837), (2305, 7803), (2601, 6915), (4149, 4335)]