28011940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{811}}^1$

素因数の和:988

約数の個数: 48

約数和(自身を含む): 64661184

約数和(自身を除く): 36649244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 628, 785, 811, 1570, 1622, 1727, 3140, 3244, 3454, 4055, 6908, 8110, 8635, 8921, 16220, 17270, 17842, 34540, 35684, 44605, 89210, 127327, 178420, 254654, 509308, 636635, 1273270, 1400597, 2546540, 2801194, 5602388, 7002985, 14005970, 28011940]

約数ペア:

[(1, 28011940), (2, 14005970), (4, 7002985), (5, 5602388), (10, 2801194), (11, 2546540), (20, 1400597), (22, 1273270), (44, 636635), (55, 509308), (110, 254654), (157, 178420), (220, 127327), (314, 89210), (628, 44605), (785, 35684), (811, 34540), (1570, 17842), (1622, 17270), (1727, 16220), (3140, 8921), (3244, 8635), (3454, 8110), (4055, 6908)]