82780040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1237}}^1$

素因数の和:1494

約数の個数: 64

約数和(自身を含む): 213926400

約数和(自身を除く): 131146360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 1195, 1237, 1673, 1912, 2390, 2474, 3346, 4780, 4948, 6185, 6692, 8365, 8659, 9560, 9896, 12370, 13384, 16730, 17318, 24740, 33460, 34636, 43295, 49480, 66920, 69272, 86590, 173180, 295643, 346360, 591286, 1182572, 1478215, 2069501, 2365144, 2956430, 4139002, 5912860, 8278004, 10347505, 11825720, 16556008, 20695010, 41390020, 82780040]

約数ペア:

[(1, 82780040), (2, 41390020), (4, 20695010), (5, 16556008), (7, 11825720), (8, 10347505), (10, 8278004), (14, 5912860), (20, 4139002), (28, 2956430), (35, 2365144), (40, 2069501), (56, 1478215), (70, 1182572), (140, 591286), (239, 346360), (280, 295643), (478, 173180), (956, 86590), (1195, 69272), (1237, 66920), (1673, 49480), (1912, 43295), (2390, 34636), (2474, 33460), (3346, 24740), (4780, 17318), (4948, 16730), (6185, 13384), (6692, 12370), (8365, 9896), (8659, 9560)]