21000508815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2447}}^1\times {\mathrm{4001}}^1$

素因数の和:6480

約数の個数: 64

約数和(自身を含む): 39501084672

約数和(自身を除く): 18500575857

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 2447, 4001, 7341, 12003, 12235, 20005, 26917, 31811, 36705, 44011, 52013, 60015, 80751, 95433, 132033, 134585, 156039, 159055, 220055, 260065, 349921, 403755, 477165, 572143, 660165, 780195, 1049763, 1716429, 1749605, 2860715, 5248815, 8582145, 9790447, 29371341, 48952235, 107694917, 127275811, 146856705, 323084751, 381827433, 538474585, 636379055, 1400033921, 1615423755, 1909137165, 4200101763, 7000169605, 21000508815]

約数ペア:

[(1, 21000508815), (3, 7000169605), (5, 4200101763), (11, 1909137165), (13, 1615423755), (15, 1400033921), (33, 636379055), (39, 538474585), (55, 381827433), (65, 323084751), (143, 146856705), (165, 127275811), (195, 107694917), (429, 48952235), (715, 29371341), (2145, 9790447), (2447, 8582145), (4001, 5248815), (7341, 2860715), (12003, 1749605), (12235, 1716429), (20005, 1049763), (26917, 780195), (31811, 660165), (36705, 572143), (44011, 477165), (52013, 403755), (60015, 349921), (80751, 260065), (95433, 220055), (132033, 159055), (134585, 156039)]