28001680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1613}}^1$

素因数の和:1664

約数の個数: 80

約数和(自身を含む): 76852224

約数和(自身を除く): 48850544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1613, 1736, 2170, 2480, 3226, 3472, 4340, 6452, 8065, 8680, 11291, 12904, 16130, 17360, 22582, 25808, 32260, 45164, 50003, 56455, 64520, 90328, 100006, 112910, 129040, 180656, 200012, 225820, 250015, 350021, 400024, 451640, 500030, 700042, 800048, 903280, 1000060, 1400084, 1750105, 2000120, 2800168, 3500210, 4000240, 5600336, 7000420, 14000840, 28001680]

約数ペア:

[(1, 28001680), (2, 14000840), (4, 7000420), (5, 5600336), (7, 4000240), (8, 3500210), (10, 2800168), (14, 2000120), (16, 1750105), (20, 1400084), (28, 1000060), (31, 903280), (35, 800048), (40, 700042), (56, 500030), (62, 451640), (70, 400024), (80, 350021), (112, 250015), (124, 225820), (140, 200012), (155, 180656), (217, 129040), (248, 112910), (280, 100006), (310, 90328), (434, 64520), (496, 56455), (560, 50003), (620, 45164), (868, 32260), (1085, 25808), (1240, 22582), (1613, 17360), (1736, 16130), (2170, 12904), (2480, 11291), (3226, 8680), (3472, 8065), (4340, 6452)]