20330140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 23699300

約数列:

[1, 2, 4, 5, 10, 20, 71, 103, 139, 142, 206, 278, 284, 355, 412, 515, 556, 695, 710, 1030, 1390, 1420, 2060, 2780, 7313, 9869, 14317, 14626, 19738, 28634, 29252, 36565, 39476, 49345, 57268, 71585, 73130, 98690, 143170, 146260, 197380, 286340, 1016507, 2033014, 4066028, 5082535, 10165070, 20330140]

約数ペア:

[(1, 20330140), (2, 10165070), (4, 5082535), (5, 4066028), (10, 2033014), (20, 1016507), (71, 286340), (103, 197380), (139, 146260), (142, 143170), (206, 98690), (278, 73130), (284, 71585), (355, 57268), (412, 49345), (515, 39476), (556, 36565), (695, 29252), (710, 28634), (1030, 19738), (1390, 14626), (1420, 14317), (2060, 9869), (2780, 7313)]