21987510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 33308490

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 127, 145, 174, 199, 254, 290, 381, 398, 435, 597, 635, 762, 870, 995, 1194, 1270, 1905, 1990, 2985, 3683, 3810, 5771, 5970, 7366, 11049, 11542, 17313, 18415, 22098, 25273, 28855, 34626, 36830, 50546, 55245, 57710, 75819, 86565, 110490, 126365, 151638, 173130, 252730, 379095, 732917, 758190, 1465834, 2198751, 3664585, 4397502, 7329170, 10993755, 21987510]

約数ペア:

[(1, 21987510), (2, 10993755), (3, 7329170), (5, 4397502), (6, 3664585), (10, 2198751), (15, 1465834), (29, 758190), (30, 732917), (58, 379095), (87, 252730), (127, 173130), (145, 151638), (174, 126365), (199, 110490), (254, 86565), (290, 75819), (381, 57710), (398, 55245), (435, 50546), (597, 36830), (635, 34626), (762, 28855), (870, 25273), (995, 22098), (1194, 18415), (1270, 17313), (1905, 11542), (1990, 11049), (2985, 7366), (3683, 5970), (3810, 5771)]