1278883888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{10909}}^1$

素因数の和:11365

約数の個数: 40

約数和(自身を含む): 2629920960

約数和(自身を除く): 1351037072

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 431, 862, 1724, 3448, 6896, 7327, 10909, 14654, 21818, 29308, 43636, 58616, 87272, 117232, 174544, 185453, 370906, 741812, 1483624, 2967248, 4701779, 9403558, 18807116, 37614232, 75228464, 79930243, 159860486, 319720972, 639441944, 1278883888]

約数ペア:

[(1, 1278883888), (2, 639441944), (4, 319720972), (8, 159860486), (16, 79930243), (17, 75228464), (34, 37614232), (68, 18807116), (136, 9403558), (272, 4701779), (431, 2967248), (862, 1483624), (1724, 741812), (3448, 370906), (6896, 185453), (7327, 174544), (10909, 117232), (14654, 87272), (21818, 58616), (29308, 43636)]