90348920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1097}}^1$

素因数の和:1208

約数の個数: 64

約数和(自身を含む): 213451200

約数和(自身を除く): 123102280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 284, 290, 355, 568, 580, 710, 1097, 1160, 1420, 2059, 2194, 2840, 4118, 4388, 5485, 8236, 8776, 10295, 10970, 16472, 20590, 21940, 31813, 41180, 43880, 63626, 77887, 82360, 127252, 155774, 159065, 254504, 311548, 318130, 389435, 623096, 636260, 778870, 1272520, 1557740, 2258723, 3115480, 4517446, 9034892, 11293615, 18069784, 22587230, 45174460, 90348920]

約数ペア:

[(1, 90348920), (2, 45174460), (4, 22587230), (5, 18069784), (8, 11293615), (10, 9034892), (20, 4517446), (29, 3115480), (40, 2258723), (58, 1557740), (71, 1272520), (116, 778870), (142, 636260), (145, 623096), (232, 389435), (284, 318130), (290, 311548), (355, 254504), (568, 159065), (580, 155774), (710, 127252), (1097, 82360), (1160, 77887), (1420, 63626), (2059, 43880), (2194, 41180), (2840, 31813), (4118, 21940), (4388, 20590), (5485, 16472), (8236, 10970), (8776, 10295)]