21974920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49943}}^1$

素因数の和:49965

約数の個数: 32

約数和(自身を含む): 53939520

約数和(自身を除く): 31964600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49943, 99886, 199772, 249715, 399544, 499430, 549373, 998860, 1098746, 1997720, 2197492, 2746865, 4394984, 5493730, 10987460, 21974920]

約数ペア:

[(1, 21974920), (2, 10987460), (4, 5493730), (5, 4394984), (8, 2746865), (10, 2197492), (11, 1997720), (20, 1098746), (22, 998860), (40, 549373), (44, 499430), (55, 399544), (88, 249715), (110, 199772), (220, 99886), (440, 49943)]