211068520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{405901}}^1$

素因数の和:405925

約数の個数: 32

約数和(自身を含む): 511436520

約数和(自身を除く): 300368000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 405901, 811802, 1623604, 2029505, 3247208, 4059010, 5276713, 8118020, 10553426, 16236040, 21106852, 26383565, 42213704, 52767130, 105534260, 211068520]

約数ペア:

[(1, 211068520), (2, 105534260), (4, 52767130), (5, 42213704), (8, 26383565), (10, 21106852), (13, 16236040), (20, 10553426), (26, 8118020), (40, 5276713), (52, 4059010), (65, 3247208), (104, 2029505), (130, 1623604), (260, 811802), (520, 405901)]