40689040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:776

約数の個数: 80

約数和(自身を含む): 109243008

約数和(自身を除く): 68553968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 113, 140, 226, 280, 452, 560, 565, 643, 791, 904, 1130, 1286, 1582, 1808, 2260, 2572, 3164, 3215, 3955, 4501, 4520, 5144, 6328, 6430, 7910, 9002, 9040, 10288, 12656, 12860, 15820, 18004, 22505, 25720, 31640, 36008, 45010, 51440, 63280, 72016, 72659, 90020, 145318, 180040, 290636, 360080, 363295, 508613, 581272, 726590, 1017226, 1162544, 1453180, 2034452, 2543065, 2906360, 4068904, 5086130, 5812720, 8137808, 10172260, 20344520, 40689040]

約数ペア:

[(1, 40689040), (2, 20344520), (4, 10172260), (5, 8137808), (7, 5812720), (8, 5086130), (10, 4068904), (14, 2906360), (16, 2543065), (20, 2034452), (28, 1453180), (35, 1162544), (40, 1017226), (56, 726590), (70, 581272), (80, 508613), (112, 363295), (113, 360080), (140, 290636), (226, 180040), (280, 145318), (452, 90020), (560, 72659), (565, 72016), (643, 63280), (791, 51440), (904, 45010), (1130, 36008), (1286, 31640), (1582, 25720), (1808, 22505), (2260, 18004), (2572, 15820), (3164, 12860), (3215, 12656), (3955, 10288), (4501, 9040), (4520, 9002), (5144, 7910), (6328, 6430)]