278492240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{267781}}^1$

素因数の和:267807

約数の個数: 40

約数和(自身を含む): 697304328

約数和(自身を除く): 418812088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 267781, 535562, 1071124, 1338905, 2142248, 2677810, 3481153, 4284496, 5355620, 6962306, 10711240, 13924612, 17405765, 21422480, 27849224, 34811530, 55698448, 69623060, 139246120, 278492240]

約数ペア:

[(1, 278492240), (2, 139246120), (4, 69623060), (5, 55698448), (8, 34811530), (10, 27849224), (13, 21422480), (16, 17405765), (20, 13924612), (26, 10711240), (40, 6962306), (52, 5355620), (65, 4284496), (80, 3481153), (104, 2677810), (130, 2142248), (208, 1338905), (260, 1071124), (520, 535562), (1040, 267781)]