20703960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{199}}^1$

素因数の和:250

約数の個数: 144

約数和(自身を含む): 71838000

約数和(自身を除く): 51134040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 199, 204, 255, 289, 306, 340, 360, 398, 408, 510, 578, 597, 612, 680, 765, 796, 867, 995, 1020, 1156, 1194, 1224, 1445, 1530, 1592, 1734, 1791, 1990, 2040, 2312, 2388, 2601, 2890, 2985, 3060, 3383, 3468, 3582, 3980, 4335, 4776, 5202, 5780, 5970, 6120, 6766, 6936, 7164, 7960, 8670, 8955, 10149, 10404, 11560, 11940, 13005, 13532, 14328, 16915, 17340, 17910, 20298, 20808, 23880, 26010, 27064, 30447, 33830, 34680, 35820, 40596, 50745, 52020, 57511, 60894, 67660, 71640, 81192, 101490, 104040, 115022, 121788, 135320, 152235, 172533, 202980, 230044, 243576, 287555, 304470, 345066, 405960, 460088, 517599, 575110, 608940, 690132, 862665, 1035198, 1150220, 1217880, 1380264, 1725330, 2070396, 2300440, 2587995, 3450660, 4140792, 5175990, 6901320, 10351980, 20703960]

約数ペア:

[(1, 20703960), (2, 10351980), (3, 6901320), (4, 5175990), (5, 4140792), (6, 3450660), (8, 2587995), (9, 2300440), (10, 2070396), (12, 1725330), (15, 1380264), (17, 1217880), (18, 1150220), (20, 1035198), (24, 862665), (30, 690132), (34, 608940), (36, 575110), (40, 517599), (45, 460088), (51, 405960), (60, 345066), (68, 304470), (72, 287555), (85, 243576), (90, 230044), (102, 202980), (120, 172533), (136, 152235), (153, 135320), (170, 121788), (180, 115022), (199, 104040), (204, 101490), (255, 81192), (289, 71640), (306, 67660), (340, 60894), (360, 57511), (398, 52020), (408, 50745), (510, 40596), (578, 35820), (597, 34680), (612, 33830), (680, 30447), (765, 27064), (796, 26010), (867, 23880), (995, 20808), (1020, 20298), (1156, 17910), (1194, 17340), (1224, 16915), (1445, 14328), (1530, 13532), (1592, 13005), (1734, 11940), (1791, 11560), (1990, 10404), (2040, 10149), (2312, 8955), (2388, 8670), (2601, 7960), (2890, 7164), (2985, 6936), (3060, 6766), (3383, 6120), (3468, 5970), (3582, 5780), (3980, 5202), (4335, 4776)]