21533720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41411}}^1$

素因数の和:41435

約数の個数: 32

約数和(自身を含む): 52179120

約数和(自身を除く): 30645400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41411, 82822, 165644, 207055, 331288, 414110, 538343, 828220, 1076686, 1656440, 2153372, 2691715, 4306744, 5383430, 10766860, 21533720]

約数ペア:

[(1, 21533720), (2, 10766860), (4, 5383430), (5, 4306744), (8, 2691715), (10, 2153372), (13, 1656440), (20, 1076686), (26, 828220), (40, 538343), (52, 414110), (65, 331288), (104, 207055), (130, 165644), (260, 82822), (520, 41411)]