172908880

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 412473600

約数和(自身を除く): 239564720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 109, 158, 218, 251, 316, 395, 436, 502, 545, 632, 790, 872, 1004, 1090, 1255, 1264, 1580, 1744, 2008, 2180, 2510, 3160, 4016, 4360, 5020, 6320, 8611, 8720, 10040, 17222, 19829, 20080, 27359, 34444, 39658, 43055, 54718, 68888, 79316, 86110, 99145, 109436, 136795, 137776, 158632, 172220, 198290, 218872, 273590, 317264, 344440, 396580, 437744, 547180, 688880, 793160, 1094360, 1586320, 2161361, 2188720, 4322722, 8645444, 10806805, 17290888, 21613610, 34581776, 43227220, 86454440, 172908880]

約数ペア:

[(1, 172908880), (2, 86454440), (4, 43227220), (5, 34581776), (8, 21613610), (10, 17290888), (16, 10806805), (20, 8645444), (40, 4322722), (79, 2188720), (80, 2161361), (109, 1586320), (158, 1094360), (218, 793160), (251, 688880), (316, 547180), (395, 437744), (436, 396580), (502, 344440), (545, 317264), (632, 273590), (790, 218872), (872, 198290), (1004, 172220), (1090, 158632), (1255, 137776), (1264, 136795), (1580, 109436), (1744, 99145), (2008, 86110), (2180, 79316), (2510, 68888), (3160, 54718), (4016, 43055), (4360, 39658), (5020, 34444), (6320, 27359), (8611, 20080), (8720, 19829), (10040, 17222)]