168955720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{421}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 388915200

約数和(自身を除く): 219959480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 127, 158, 254, 316, 395, 421, 508, 632, 635, 790, 842, 1016, 1270, 1580, 1684, 2105, 2540, 3160, 3368, 4210, 5080, 8420, 10033, 16840, 20066, 33259, 40132, 50165, 53467, 66518, 80264, 100330, 106934, 133036, 166295, 200660, 213868, 266072, 267335, 332590, 401320, 427736, 534670, 665180, 1069340, 1330360, 2138680, 4223893, 8447786, 16895572, 21119465, 33791144, 42238930, 84477860, 168955720]

約数ペア:

[(1, 168955720), (2, 84477860), (4, 42238930), (5, 33791144), (8, 21119465), (10, 16895572), (20, 8447786), (40, 4223893), (79, 2138680), (127, 1330360), (158, 1069340), (254, 665180), (316, 534670), (395, 427736), (421, 401320), (508, 332590), (632, 267335), (635, 266072), (790, 213868), (842, 200660), (1016, 166295), (1270, 133036), (1580, 106934), (1684, 100330), (2105, 80264), (2540, 66518), (3160, 53467), (3368, 50165), (4210, 40132), (5080, 33259), (8420, 20066), (10033, 16840)]