20701440

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{599}}^1$

素因数の和:629

約数の個数: 144

約数和(自身を含む): 73584000

約数和(自身を除く): 52882560

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, 599, 640, 720, 768, 864, 960, 1080, 1152, 1198, 1280, 1440, 1728, 1797, 1920, 2160, 2304, 2396, 2880, 2995, 3456, 3594, 3840, 4320, 4792, 5391, 5760, 5990, 6912, 7188, 8640, 8985, 9584, 10782, 11520, 11980, 14376, 16173, 17280, 17970, 19168, 21564, 23960, 26955, 28752, 32346, 34560, 35940, 38336, 43128, 47920, 53910, 57504, 64692, 71880, 76672, 80865, 86256, 95840, 107820, 115008, 129384, 143760, 153344, 161730, 172512, 191680, 215640, 230016, 258768, 287520, 323460, 345024, 383360, 431280, 460032, 517536, 575040, 646920, 690048, 766720, 862560, 1035072, 1150080, 1293840, 1380096, 1725120, 2070144, 2300160, 2587680, 3450240, 4140288, 5175360, 6900480, 10350720, 20701440]

約数ペア:

[(1, 20701440), (2, 10350720), (3, 6900480), (4, 5175360), (5, 4140288), (6, 3450240), (8, 2587680), (9, 2300160), (10, 2070144), (12, 1725120), (15, 1380096), (16, 1293840), (18, 1150080), (20, 1035072), (24, 862560), (27, 766720), (30, 690048), (32, 646920), (36, 575040), (40, 517536), (45, 460032), (48, 431280), (54, 383360), (60, 345024), (64, 323460), (72, 287520), (80, 258768), (90, 230016), (96, 215640), (108, 191680), (120, 172512), (128, 161730), (135, 153344), (144, 143760), (160, 129384), (180, 115008), (192, 107820), (216, 95840), (240, 86256), (256, 80865), (270, 76672), (288, 71880), (320, 64692), (360, 57504), (384, 53910), (432, 47920), (480, 43128), (540, 38336), (576, 35940), (599, 34560), (640, 32346), (720, 28752), (768, 26955), (864, 23960), (960, 21564), (1080, 19168), (1152, 17970), (1198, 17280), (1280, 16173), (1440, 14376), (1728, 11980), (1797, 11520), (1920, 10782), (2160, 9584), (2304, 8985), (2396, 8640), (2880, 7188), (2995, 6912), (3456, 5990), (3594, 5760), (3840, 5391), (4320, 4792)]