20748160

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1907}}^1$

素因数の和:1943

約数の個数: 64

約数和(自身を含む): 52546320

約数和(自身を除く): 31798160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 1907, 2176, 2720, 3814, 5440, 7628, 9535, 10880, 15256, 19070, 30512, 32419, 38140, 61024, 64838, 76280, 122048, 129676, 152560, 162095, 244096, 259352, 305120, 324190, 518704, 610240, 648380, 1037408, 1220480, 1296760, 2074816, 2593520, 4149632, 5187040, 10374080, 20748160]

約数ペア:

[(1, 20748160), (2, 10374080), (4, 5187040), (5, 4149632), (8, 2593520), (10, 2074816), (16, 1296760), (17, 1220480), (20, 1037408), (32, 648380), (34, 610240), (40, 518704), (64, 324190), (68, 305120), (80, 259352), (85, 244096), (128, 162095), (136, 152560), (160, 129676), (170, 122048), (272, 76280), (320, 64838), (340, 61024), (544, 38140), (640, 32419), (680, 30512), (1088, 19070), (1360, 15256), (1907, 10880), (2176, 9535), (2720, 7628), (3814, 5440)]