206985220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{19417}}^1$

素因数の和:19480

約数の個数: 48

約数和(自身を含む): 479546928

約数和(自身を除く): 272561708

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 2132, 2665, 5330, 10660, 19417, 38834, 77668, 97085, 194170, 252421, 388340, 504842, 796097, 1009684, 1262105, 1592194, 2524210, 3184388, 3980485, 5048420, 7960970, 10349261, 15921940, 20698522, 41397044, 51746305, 103492610, 206985220]

約数ペア:

[(1, 206985220), (2, 103492610), (4, 51746305), (5, 41397044), (10, 20698522), (13, 15921940), (20, 10349261), (26, 7960970), (41, 5048420), (52, 3980485), (65, 3184388), (82, 2524210), (130, 1592194), (164, 1262105), (205, 1009684), (260, 796097), (410, 504842), (533, 388340), (820, 252421), (1066, 194170), (2132, 97085), (2665, 77668), (5330, 38834), (10660, 19417)]