20225280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:276

約数の個数: 144

約数和(自身を含む): 67697280

約数和(自身を除く): 47472000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 229, 230, 240, 256, 276, 320, 345, 368, 384, 458, 460, 480, 552, 640, 687, 690, 736, 768, 916, 920, 960, 1104, 1145, 1280, 1374, 1380, 1472, 1832, 1840, 1920, 2208, 2290, 2748, 2760, 2944, 3435, 3664, 3680, 3840, 4416, 4580, 5267, 5496, 5520, 5888, 6870, 7328, 7360, 8832, 9160, 10534, 10992, 11040, 13740, 14656, 14720, 15801, 17664, 18320, 21068, 21984, 22080, 26335, 27480, 29312, 29440, 31602, 36640, 42136, 43968, 44160, 52670, 54960, 58624, 63204, 73280, 79005, 84272, 87936, 88320, 105340, 109920, 126408, 146560, 158010, 168544, 175872, 210680, 219840, 252816, 293120, 316020, 337088, 421360, 439680, 505632, 632040, 674176, 842720, 879360, 1011264, 1264080, 1348352, 1685440, 2022528, 2528160, 3370880, 4045056, 5056320, 6741760, 10112640, 20225280]

約数ペア:

[(1, 20225280), (2, 10112640), (3, 6741760), (4, 5056320), (5, 4045056), (6, 3370880), (8, 2528160), (10, 2022528), (12, 1685440), (15, 1348352), (16, 1264080), (20, 1011264), (23, 879360), (24, 842720), (30, 674176), (32, 632040), (40, 505632), (46, 439680), (48, 421360), (60, 337088), (64, 316020), (69, 293120), (80, 252816), (92, 219840), (96, 210680), (115, 175872), (120, 168544), (128, 158010), (138, 146560), (160, 126408), (184, 109920), (192, 105340), (229, 88320), (230, 87936), (240, 84272), (256, 79005), (276, 73280), (320, 63204), (345, 58624), (368, 54960), (384, 52670), (458, 44160), (460, 43968), (480, 42136), (552, 36640), (640, 31602), (687, 29440), (690, 29312), (736, 27480), (768, 26335), (916, 22080), (920, 21984), (960, 21068), (1104, 18320), (1145, 17664), (1280, 15801), (1374, 14720), (1380, 14656), (1472, 13740), (1832, 11040), (1840, 10992), (1920, 10534), (2208, 9160), (2290, 8832), (2748, 7360), (2760, 7328), (2944, 6870), (3435, 5888), (3664, 5520), (3680, 5496), (3840, 5267), (4416, 4580)]