1286104520

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{28631}}^1$

素因数の和:29765

約数の個数: 32

約数和(自身を含む): 2896413120

約数和(自身を除く): 1610308600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 2246, 4492, 5615, 8984, 11230, 22460, 28631, 44920, 57262, 114524, 143155, 229048, 286310, 572620, 1145240, 32152613, 64305226, 128610452, 160763065, 257220904, 321526130, 643052260, 1286104520]

約数ペア:

[(1, 1286104520), (2, 643052260), (4, 321526130), (5, 257220904), (8, 160763065), (10, 128610452), (20, 64305226), (40, 32152613), (1123, 1145240), (2246, 572620), (4492, 286310), (5615, 229048), (8984, 143155), (11230, 114524), (22460, 57262), (28631, 44920)]