28720330

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{647}}^1$

素因数の和:870

約数の個数: 32

約数和(自身を含む): 54307584

約数和(自身を除く): 25587254

約数列:

[1, 2, 5, 10, 23, 46, 115, 193, 230, 386, 647, 965, 1294, 1930, 3235, 4439, 6470, 8878, 14881, 22195, 29762, 44390, 74405, 124871, 148810, 249742, 624355, 1248710, 2872033, 5744066, 14360165, 28720330]

約数ペア:

[(1, 28720330), (2, 14360165), (5, 5744066), (10, 2872033), (23, 1248710), (46, 624355), (115, 249742), (193, 148810), (230, 124871), (386, 74405), (647, 44390), (965, 29762), (1294, 22195), (1930, 14881), (3235, 8878), (4439, 6470)]