19661840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22343}}^1$

素因数の和:22367

約数の個数: 40

約数和(自身を含む): 49871808

約数和(自身を除く): 30209968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22343, 44686, 89372, 111715, 178744, 223430, 245773, 357488, 446860, 491546, 893720, 983092, 1228865, 1787440, 1966184, 2457730, 3932368, 4915460, 9830920, 19661840]

約数ペア:

[(1, 19661840), (2, 9830920), (4, 4915460), (5, 3932368), (8, 2457730), (10, 1966184), (11, 1787440), (16, 1228865), (20, 983092), (22, 893720), (40, 491546), (44, 446860), (55, 357488), (80, 245773), (88, 223430), (110, 178744), (176, 111715), (220, 89372), (440, 44686), (880, 22343)]