21096140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1979}}^1$

素因数の和:2042

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 27801940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1979, 2132, 2665, 3958, 5330, 7916, 9895, 10660, 19790, 25727, 39580, 51454, 81139, 102908, 128635, 162278, 257270, 324556, 405695, 514540, 811390, 1054807, 1622780, 2109614, 4219228, 5274035, 10548070, 21096140]

約数ペア:

[(1, 21096140), (2, 10548070), (4, 5274035), (5, 4219228), (10, 2109614), (13, 1622780), (20, 1054807), (26, 811390), (41, 514540), (52, 405695), (65, 324556), (82, 257270), (130, 162278), (164, 128635), (205, 102908), (260, 81139), (410, 51454), (533, 39580), (820, 25727), (1066, 19790), (1979, 10660), (2132, 9895), (2665, 7916), (3958, 5330)]