12940784

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{13259}}^1$

素因数の和:13328

約数の個数: 20

約数和(自身を含む): 25485720

約数和(自身を除く): 12544936

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 13259, 26518, 53036, 106072, 212144, 808799, 1617598, 3235196, 6470392, 12940784]

約数ペア:

[(1, 12940784), (2, 6470392), (4, 3235196), (8, 1617598), (16, 808799), (61, 212144), (122, 106072), (244, 53036), (488, 26518), (976, 13259)]