19912000

素因数分解:

$2^6\times 5^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:177

約数の個数: 112

約数和(自身を含む): 52303680

約数和(自身を除く): 32391680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 64, 76, 80, 95, 100, 125, 131, 152, 160, 190, 200, 250, 262, 304, 320, 380, 400, 475, 500, 524, 608, 655, 760, 800, 950, 1000, 1048, 1216, 1310, 1520, 1600, 1900, 2000, 2096, 2375, 2489, 2620, 3040, 3275, 3800, 4000, 4192, 4750, 4978, 5240, 6080, 6550, 7600, 8000, 8384, 9500, 9956, 10480, 12445, 13100, 15200, 16375, 19000, 19912, 20960, 24890, 26200, 30400, 32750, 38000, 39824, 41920, 49780, 52400, 62225, 65500, 76000, 79648, 99560, 104800, 124450, 131000, 152000, 159296, 199120, 209600, 248900, 262000, 311125, 398240, 497800, 524000, 622250, 796480, 995600, 1048000, 1244500, 1991200, 2489000, 3982400, 4978000, 9956000, 19912000]

約数ペア:

[(1, 19912000), (2, 9956000), (4, 4978000), (5, 3982400), (8, 2489000), (10, 1991200), (16, 1244500), (19, 1048000), (20, 995600), (25, 796480), (32, 622250), (38, 524000), (40, 497800), (50, 398240), (64, 311125), (76, 262000), (80, 248900), (95, 209600), (100, 199120), (125, 159296), (131, 152000), (152, 131000), (160, 124450), (190, 104800), (200, 99560), (250, 79648), (262, 76000), (304, 65500), (320, 62225), (380, 52400), (400, 49780), (475, 41920), (500, 39824), (524, 38000), (608, 32750), (655, 30400), (760, 26200), (800, 24890), (950, 20960), (1000, 19912), (1048, 19000), (1216, 16375), (1310, 15200), (1520, 13100), (1600, 12445), (1900, 10480), (2000, 9956), (2096, 9500), (2375, 8384), (2489, 8000), (2620, 7600), (3040, 6550), (3275, 6080), (3800, 5240), (4000, 4978), (4192, 4750)]