20286720

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{587}}^1$

素因数の和:617

約数の個数: 144

約数和(自身を含む): 72112320

約数和(自身を除く): 51825600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 587, 640, 720, 768, 864, 960, 1080, 1152, 1174, 1280, 1440, 1728, 1761, 1920, 2160, 2304, 2348, 2880, 2935, 3456, 3522, 3840, 4320, 4696, 5283, 5760, 5870, 6912, 7044, 8640, 8805, 9392, 10566, 11520, 11740, 14088, 15849, 17280, 17610, 18784, 21132, 23480, 26415, 28176, 31698, 34560, 35220, 37568, 42264, 46960, 52830, 56352, 63396, 70440, 75136, 79245, 84528, 93920, 105660, 112704, 126792, 140880, 150272, 158490, 169056, 187840, 211320, 225408, 253584, 281760, 316980, 338112, 375680, 422640, 450816, 507168, 563520, 633960, 676224, 751360, 845280, 1014336, 1127040, 1267920, 1352448, 1690560, 2028672, 2254080, 2535840, 3381120, 4057344, 5071680, 6762240, 10143360, 20286720]

約数ペア:

[(1, 20286720), (2, 10143360), (3, 6762240), (4, 5071680), (5, 4057344), (6, 3381120), (8, 2535840), (9, 2254080), (10, 2028672), (12, 1690560), (15, 1352448), (16, 1267920), (18, 1127040), (20, 1014336), (24, 845280), (27, 751360), (30, 676224), (32, 633960), (36, 563520), (40, 507168), (45, 450816), (48, 422640), (54, 375680), (60, 338112), (64, 316980), (72, 281760), (80, 253584), (90, 225408), (96, 211320), (108, 187840), (120, 169056), (128, 158490), (135, 150272), (144, 140880), (160, 126792), (180, 112704), (192, 105660), (216, 93920), (240, 84528), (256, 79245), (270, 75136), (288, 70440), (320, 63396), (360, 56352), (384, 52830), (432, 46960), (480, 42264), (540, 37568), (576, 35220), (587, 34560), (640, 31698), (720, 28176), (768, 26415), (864, 23480), (960, 21132), (1080, 18784), (1152, 17610), (1174, 17280), (1280, 15849), (1440, 14088), (1728, 11740), (1761, 11520), (1920, 10566), (2160, 9392), (2304, 8805), (2348, 8640), (2880, 7044), (2935, 6912), (3456, 5870), (3522, 5760), (3840, 5283), (4320, 4696)]