127105280

素因数分解:

$2^8\times 5^1\times {\mathrm{199}}^1\times {\mathrm{499}}^1$

素因数の和:719

約数の個数: 72

約数和(自身を含む): 306600000

約数和(自身を除く): 179494720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 320, 398, 499, 640, 796, 995, 998, 1280, 1592, 1990, 1996, 2495, 3184, 3980, 3992, 4990, 6368, 7960, 7984, 9980, 12736, 15920, 15968, 19960, 25472, 31840, 31936, 39920, 50944, 63680, 63872, 79840, 99301, 127360, 127744, 159680, 198602, 254720, 319360, 397204, 496505, 638720, 794408, 993010, 1588816, 1986020, 3177632, 3972040, 6355264, 7944080, 12710528, 15888160, 25421056, 31776320, 63552640, 127105280]

約数ペア:

[(1, 127105280), (2, 63552640), (4, 31776320), (5, 25421056), (8, 15888160), (10, 12710528), (16, 7944080), (20, 6355264), (32, 3972040), (40, 3177632), (64, 1986020), (80, 1588816), (128, 993010), (160, 794408), (199, 638720), (256, 496505), (320, 397204), (398, 319360), (499, 254720), (640, 198602), (796, 159680), (995, 127744), (998, 127360), (1280, 99301), (1592, 79840), (1990, 63872), (1996, 63680), (2495, 50944), (3184, 39920), (3980, 31936), (3992, 31840), (4990, 25472), (6368, 19960), (7960, 15968), (7984, 15920), (9980, 12736)]