25565440

素因数分解:

$2^8\times 5^1\times {\mathrm{19973}}^1$

素因数の和:19994

約数の個数: 36

約数和(自身を含む): 61240284

約数和(自身を除く): 35674844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 19973, 39946, 79892, 99865, 159784, 199730, 319568, 399460, 639136, 798920, 1278272, 1597840, 2556544, 3195680, 5113088, 6391360, 12782720, 25565440]

約数ペア:

[(1, 25565440), (2, 12782720), (4, 6391360), (5, 5113088), (8, 3195680), (10, 2556544), (16, 1597840), (20, 1278272), (32, 798920), (40, 639136), (64, 399460), (80, 319568), (128, 199730), (160, 159784), (256, 99865), (320, 79892), (640, 39946), (1280, 19973)]