18642800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1$

素因数の和:271

約数の個数: 120

約数和(自身を含む): 51663360

約数和(自身を除く): 33020560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 25, 38, 40, 44, 50, 55, 76, 80, 88, 95, 100, 110, 152, 176, 190, 200, 209, 220, 223, 275, 304, 380, 400, 418, 440, 446, 475, 550, 760, 836, 880, 892, 950, 1045, 1100, 1115, 1520, 1672, 1784, 1900, 2090, 2200, 2230, 2453, 3344, 3568, 3800, 4180, 4237, 4400, 4460, 4906, 5225, 5575, 7600, 8360, 8474, 8920, 9812, 10450, 11150, 12265, 16720, 16948, 17840, 19624, 20900, 21185, 22300, 24530, 33896, 39248, 41800, 42370, 44600, 46607, 49060, 61325, 67792, 83600, 84740, 89200, 93214, 98120, 105925, 122650, 169480, 186428, 196240, 211850, 233035, 245300, 338960, 372856, 423700, 466070, 490600, 745712, 847400, 932140, 981200, 1165175, 1694800, 1864280, 2330350, 3728560, 4660700, 9321400, 18642800]

約数ペア:

[(1, 18642800), (2, 9321400), (4, 4660700), (5, 3728560), (8, 2330350), (10, 1864280), (11, 1694800), (16, 1165175), (19, 981200), (20, 932140), (22, 847400), (25, 745712), (38, 490600), (40, 466070), (44, 423700), (50, 372856), (55, 338960), (76, 245300), (80, 233035), (88, 211850), (95, 196240), (100, 186428), (110, 169480), (152, 122650), (176, 105925), (190, 98120), (200, 93214), (209, 89200), (220, 84740), (223, 83600), (275, 67792), (304, 61325), (380, 49060), (400, 46607), (418, 44600), (440, 42370), (446, 41800), (475, 39248), (550, 33896), (760, 24530), (836, 22300), (880, 21185), (892, 20900), (950, 19624), (1045, 17840), (1100, 16948), (1115, 16720), (1520, 12265), (1672, 11150), (1784, 10450), (1900, 9812), (2090, 8920), (2200, 8474), (2230, 8360), (2453, 7600), (3344, 5575), (3568, 5225), (3800, 4906), (4180, 4460), (4237, 4400)]