81725440

素因数分解:

$2^{11}\times 5^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:397

約数の個数: 96

約数和(自身を含む): 205208640

約数和(自身を除く): 123483200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 347, 368, 460, 512, 640, 694, 736, 920, 1024, 1280, 1388, 1472, 1735, 1840, 2048, 2560, 2776, 2944, 3470, 3680, 5120, 5552, 5888, 6940, 7360, 7981, 10240, 11104, 11776, 13880, 14720, 15962, 22208, 23552, 27760, 29440, 31924, 39905, 44416, 47104, 55520, 58880, 63848, 79810, 88832, 111040, 117760, 127696, 159620, 177664, 222080, 235520, 255392, 319240, 355328, 444160, 510784, 638480, 710656, 888320, 1021568, 1276960, 1776640, 2043136, 2553920, 3553280, 4086272, 5107840, 8172544, 10215680, 16345088, 20431360, 40862720, 81725440]

約数ペア:

[(1, 81725440), (2, 40862720), (4, 20431360), (5, 16345088), (8, 10215680), (10, 8172544), (16, 5107840), (20, 4086272), (23, 3553280), (32, 2553920), (40, 2043136), (46, 1776640), (64, 1276960), (80, 1021568), (92, 888320), (115, 710656), (128, 638480), (160, 510784), (184, 444160), (230, 355328), (256, 319240), (320, 255392), (347, 235520), (368, 222080), (460, 177664), (512, 159620), (640, 127696), (694, 117760), (736, 111040), (920, 88832), (1024, 79810), (1280, 63848), (1388, 58880), (1472, 55520), (1735, 47104), (1840, 44416), (2048, 39905), (2560, 31924), (2776, 29440), (2944, 27760), (3470, 23552), (3680, 22208), (5120, 15962), (5552, 14720), (5888, 13880), (6940, 11776), (7360, 11104), (7981, 10240)]