20597880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{439}}^1$

素因数の和:493

約数の個数: 128

約数和(自身を含む): 68428800

約数和(自身を除く): 47830920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 24, 30, 34, 40, 46, 51, 60, 68, 69, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 230, 255, 276, 340, 345, 391, 408, 439, 460, 510, 552, 680, 690, 782, 878, 920, 1020, 1173, 1317, 1380, 1564, 1756, 1955, 2040, 2195, 2346, 2634, 2760, 3128, 3512, 3910, 4390, 4692, 5268, 5865, 6585, 7463, 7820, 8780, 9384, 10097, 10536, 11730, 13170, 14926, 15640, 17560, 20194, 22389, 23460, 26340, 29852, 30291, 37315, 40388, 44778, 46920, 50485, 52680, 59704, 60582, 74630, 80776, 89556, 100970, 111945, 121164, 149260, 151455, 171649, 179112, 201940, 223890, 242328, 298520, 302910, 343298, 403880, 447780, 514947, 605820, 686596, 858245, 895560, 1029894, 1211640, 1373192, 1716490, 2059788, 2574735, 3432980, 4119576, 5149470, 6865960, 10298940, 20597880]

約数ペア:

[(1, 20597880), (2, 10298940), (3, 6865960), (4, 5149470), (5, 4119576), (6, 3432980), (8, 2574735), (10, 2059788), (12, 1716490), (15, 1373192), (17, 1211640), (20, 1029894), (23, 895560), (24, 858245), (30, 686596), (34, 605820), (40, 514947), (46, 447780), (51, 403880), (60, 343298), (68, 302910), (69, 298520), (85, 242328), (92, 223890), (102, 201940), (115, 179112), (120, 171649), (136, 151455), (138, 149260), (170, 121164), (184, 111945), (204, 100970), (230, 89556), (255, 80776), (276, 74630), (340, 60582), (345, 59704), (391, 52680), (408, 50485), (439, 46920), (460, 44778), (510, 40388), (552, 37315), (680, 30291), (690, 29852), (782, 26340), (878, 23460), (920, 22389), (1020, 20194), (1173, 17560), (1317, 15640), (1380, 14926), (1564, 13170), (1756, 11730), (1955, 10536), (2040, 10097), (2195, 9384), (2346, 8780), (2634, 7820), (2760, 7463), (3128, 6585), (3512, 5865), (3910, 5268), (4390, 4692)]