19309840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21943}}^1$

素因数の和:21967

約数の個数: 40

約数和(自身を含む): 48979008

約数和(自身を除く): 29669168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21943, 43886, 87772, 109715, 175544, 219430, 241373, 351088, 438860, 482746, 877720, 965492, 1206865, 1755440, 1930984, 2413730, 3861968, 4827460, 9654920, 19309840]

約数ペア:

[(1, 19309840), (2, 9654920), (4, 4827460), (5, 3861968), (8, 2413730), (10, 1930984), (11, 1755440), (16, 1206865), (20, 965492), (22, 877720), (40, 482746), (44, 438860), (55, 351088), (80, 241373), (88, 219430), (110, 175544), (176, 109715), (220, 87772), (440, 43886), (880, 21943)]