19890400

素因数分解:

$2^5\times 5^2\times {\mathrm{23}}^2\times {\mathrm{47}}^1$

素因数の和:113

約数の個数: 108

約数和(自身を含む): 51840432

約数和(自身を除く): 31950032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 47, 50, 80, 92, 94, 100, 115, 160, 184, 188, 200, 230, 235, 368, 376, 400, 460, 470, 529, 575, 736, 752, 800, 920, 940, 1058, 1081, 1150, 1175, 1504, 1840, 1880, 2116, 2162, 2300, 2350, 2645, 3680, 3760, 4232, 4324, 4600, 4700, 5290, 5405, 7520, 8464, 8648, 9200, 9400, 10580, 10810, 13225, 16928, 17296, 18400, 18800, 21160, 21620, 24863, 26450, 27025, 34592, 37600, 42320, 43240, 49726, 52900, 54050, 84640, 86480, 99452, 105800, 108100, 124315, 172960, 198904, 211600, 216200, 248630, 397808, 423200, 432400, 497260, 621575, 795616, 864800, 994520, 1243150, 1989040, 2486300, 3978080, 4972600, 9945200, 19890400]

約数ペア:

[(1, 19890400), (2, 9945200), (4, 4972600), (5, 3978080), (8, 2486300), (10, 1989040), (16, 1243150), (20, 994520), (23, 864800), (25, 795616), (32, 621575), (40, 497260), (46, 432400), (47, 423200), (50, 397808), (80, 248630), (92, 216200), (94, 211600), (100, 198904), (115, 172960), (160, 124315), (184, 108100), (188, 105800), (200, 99452), (230, 86480), (235, 84640), (368, 54050), (376, 52900), (400, 49726), (460, 43240), (470, 42320), (529, 37600), (575, 34592), (736, 27025), (752, 26450), (800, 24863), (920, 21620), (940, 21160), (1058, 18800), (1081, 18400), (1150, 17296), (1175, 16928), (1504, 13225), (1840, 10810), (1880, 10580), (2116, 9400), (2162, 9200), (2300, 8648), (2350, 8464), (2645, 7520), (3680, 5405), (3760, 5290), (4232, 4700), (4324, 4600)]