638462020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1\times {\mathrm{241}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 1561190400

約数和(自身を除く): 922728380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 149, 241, 254, 298, 482, 508, 596, 635, 745, 889, 964, 1043, 1205, 1270, 1490, 1687, 1778, 2086, 2410, 2540, 2980, 3374, 3556, 4172, 4445, 4820, 5215, 6748, 8435, 8890, 10430, 16870, 17780, 18923, 20860, 30607, 33740, 35909, 37846, 61214, 71818, 75692, 94615, 122428, 132461, 143636, 153035, 179545, 189230, 214249, 251363, 264922, 306070, 359090, 378460, 428498, 502726, 529844, 612140, 662305, 718180, 856996, 1005452, 1071245, 1256815, 1324610, 2142490, 2513630, 2649220, 4284980, 4560443, 5027260, 9120886, 18241772, 22802215, 31923101, 45604430, 63846202, 91208860, 127692404, 159615505, 319231010, 638462020]

約数ペア:

[(1, 638462020), (2, 319231010), (4, 159615505), (5, 127692404), (7, 91208860), (10, 63846202), (14, 45604430), (20, 31923101), (28, 22802215), (35, 18241772), (70, 9120886), (127, 5027260), (140, 4560443), (149, 4284980), (241, 2649220), (254, 2513630), (298, 2142490), (482, 1324610), (508, 1256815), (596, 1071245), (635, 1005452), (745, 856996), (889, 718180), (964, 662305), (1043, 612140), (1205, 529844), (1270, 502726), (1490, 428498), (1687, 378460), (1778, 359090), (2086, 306070), (2410, 264922), (2540, 251363), (2980, 214249), (3374, 189230), (3556, 179545), (4172, 153035), (4445, 143636), (4820, 132461), (5215, 122428), (6748, 94615), (8435, 75692), (8890, 71818), (10430, 61214), (16870, 37846), (17780, 35909), (18923, 33740), (20860, 30607)]