19619380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 45251136

約数和(自身を除く): 25631756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 257, 347, 514, 694, 1028, 1285, 1388, 1735, 2570, 2827, 3470, 3817, 5140, 5654, 6940, 7634, 11308, 14135, 15268, 19085, 28270, 38170, 56540, 76340, 89179, 178358, 356716, 445895, 891790, 980969, 1783580, 1961938, 3923876, 4904845, 9809690, 19619380]

約数ペア:

[(1, 19619380), (2, 9809690), (4, 4904845), (5, 3923876), (10, 1961938), (11, 1783580), (20, 980969), (22, 891790), (44, 445895), (55, 356716), (110, 178358), (220, 89179), (257, 76340), (347, 56540), (514, 38170), (694, 28270), (1028, 19085), (1285, 15268), (1388, 14135), (1735, 11308), (2570, 7634), (2827, 6940), (3470, 5654), (3817, 5140)]