20159960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1340

約数の個数: 64

約数和(自身を含む): 50155200

約数和(自身を除く): 29995240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1289, 1564, 1955, 2578, 3128, 3910, 5156, 6445, 7820, 10312, 12890, 15640, 21913, 25780, 29647, 43826, 51560, 59294, 87652, 109565, 118588, 148235, 175304, 219130, 237176, 296470, 438260, 503999, 592940, 876520, 1007998, 1185880, 2015996, 2519995, 4031992, 5039990, 10079980, 20159960]

約数ペア:

[(1, 20159960), (2, 10079980), (4, 5039990), (5, 4031992), (8, 2519995), (10, 2015996), (17, 1185880), (20, 1007998), (23, 876520), (34, 592940), (40, 503999), (46, 438260), (68, 296470), (85, 237176), (92, 219130), (115, 175304), (136, 148235), (170, 118588), (184, 109565), (230, 87652), (340, 59294), (391, 51560), (460, 43826), (680, 29647), (782, 25780), (920, 21913), (1289, 15640), (1564, 12890), (1955, 10312), (2578, 7820), (3128, 6445), (3910, 5156)]