161591920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2857}}^1$

素因数の和:2978

約数の個数: 80

約数和(自身を含む): 433775808

約数和(自身を除く): 272183888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 560, 707, 808, 1010, 1414, 1616, 2020, 2828, 2857, 3535, 4040, 5656, 5714, 7070, 8080, 11312, 11428, 14140, 14285, 19999, 22856, 28280, 28570, 39998, 45712, 56560, 57140, 79996, 99995, 114280, 159992, 199990, 228560, 288557, 319984, 399980, 577114, 799960, 1154228, 1442785, 1599920, 2019899, 2308456, 2885570, 4039798, 4616912, 5771140, 8079596, 10099495, 11542280, 16159192, 20198990, 23084560, 32318384, 40397980, 80795960, 161591920]

約数ペア:

[(1, 161591920), (2, 80795960), (4, 40397980), (5, 32318384), (7, 23084560), (8, 20198990), (10, 16159192), (14, 11542280), (16, 10099495), (20, 8079596), (28, 5771140), (35, 4616912), (40, 4039798), (56, 2885570), (70, 2308456), (80, 2019899), (101, 1599920), (112, 1442785), (140, 1154228), (202, 799960), (280, 577114), (404, 399980), (505, 319984), (560, 288557), (707, 228560), (808, 199990), (1010, 159992), (1414, 114280), (1616, 99995), (2020, 79996), (2828, 57140), (2857, 56560), (3535, 45712), (4040, 39998), (5656, 28570), (5714, 28280), (7070, 22856), (8080, 19999), (11312, 14285), (11428, 14140)]