12639380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{281}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 28851984

約数和(自身を除く): 16212604

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 173, 260, 281, 346, 562, 692, 865, 1124, 1405, 1730, 2249, 2810, 3460, 3653, 4498, 5620, 7306, 8996, 11245, 14612, 18265, 22490, 36530, 44980, 48613, 73060, 97226, 194452, 243065, 486130, 631969, 972260, 1263938, 2527876, 3159845, 6319690, 12639380]

約数ペア:

[(1, 12639380), (2, 6319690), (4, 3159845), (5, 2527876), (10, 1263938), (13, 972260), (20, 631969), (26, 486130), (52, 243065), (65, 194452), (130, 97226), (173, 73060), (260, 48613), (281, 44980), (346, 36530), (562, 22490), (692, 18265), (865, 14612), (1124, 11245), (1405, 8996), (1730, 7306), (2249, 5620), (2810, 4498), (3460, 3653)]