18851800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:98

約数の個数: 144

約数和(自身を含む): 51949800

約数和(自身を除く): 33098000

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 25, 38, 40, 41, 44, 50, 55, 76, 82, 88, 95, 100, 110, 121, 152, 164, 190, 200, 205, 209, 220, 242, 275, 328, 380, 410, 418, 440, 451, 475, 484, 550, 605, 760, 779, 820, 836, 902, 950, 968, 1025, 1045, 1100, 1210, 1558, 1640, 1672, 1804, 1900, 2050, 2090, 2200, 2255, 2299, 2420, 3025, 3116, 3608, 3800, 3895, 4100, 4180, 4510, 4598, 4840, 4961, 5225, 6050, 6232, 7790, 8200, 8360, 8569, 9020, 9196, 9922, 10450, 11275, 11495, 12100, 15580, 17138, 18040, 18392, 19475, 19844, 20900, 22550, 22990, 24200, 24805, 31160, 34276, 38950, 39688, 41800, 42845, 45100, 45980, 49610, 57475, 68552, 77900, 85690, 90200, 91960, 94259, 99220, 114950, 124025, 155800, 171380, 188518, 198440, 214225, 229900, 248050, 342760, 377036, 428450, 459800, 471295, 496100, 754072, 856900, 942590, 992200, 1713800, 1885180, 2356475, 3770360, 4712950, 9425900, 18851800]

約数ペア:

[(1, 18851800), (2, 9425900), (4, 4712950), (5, 3770360), (8, 2356475), (10, 1885180), (11, 1713800), (19, 992200), (20, 942590), (22, 856900), (25, 754072), (38, 496100), (40, 471295), (41, 459800), (44, 428450), (50, 377036), (55, 342760), (76, 248050), (82, 229900), (88, 214225), (95, 198440), (100, 188518), (110, 171380), (121, 155800), (152, 124025), (164, 114950), (190, 99220), (200, 94259), (205, 91960), (209, 90200), (220, 85690), (242, 77900), (275, 68552), (328, 57475), (380, 49610), (410, 45980), (418, 45100), (440, 42845), (451, 41800), (475, 39688), (484, 38950), (550, 34276), (605, 31160), (760, 24805), (779, 24200), (820, 22990), (836, 22550), (902, 20900), (950, 19844), (968, 19475), (1025, 18392), (1045, 18040), (1100, 17138), (1210, 15580), (1558, 12100), (1640, 11495), (1672, 11275), (1804, 10450), (1900, 9922), (2050, 9196), (2090, 9020), (2200, 8569), (2255, 8360), (2299, 8200), (2420, 7790), (3025, 6232), (3116, 6050), (3608, 5225), (3800, 4961), (3895, 4840), (4100, 4598), (4180, 4510)]