20747520

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{1801}}^1$

素因数の和:1828

約数の個数: 108

約数和(自身を含む): 71824116

約数和(自身を除く): 51076596

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1801, 1920, 2304, 2880, 3602, 3840, 5403, 5760, 7204, 9005, 10806, 11520, 14408, 16209, 18010, 21612, 27015, 28816, 32418, 36020, 43224, 54030, 57632, 64836, 72040, 81045, 86448, 108060, 115264, 129672, 144080, 162090, 172896, 216120, 230528, 259344, 288160, 324180, 345792, 432240, 461056, 518688, 576320, 648360, 691584, 864480, 1037376, 1152640, 1296720, 1383168, 1728960, 2074752, 2305280, 2593440, 3457920, 4149504, 5186880, 6915840, 10373760, 20747520]

約数ペア:

[(1, 20747520), (2, 10373760), (3, 6915840), (4, 5186880), (5, 4149504), (6, 3457920), (8, 2593440), (9, 2305280), (10, 2074752), (12, 1728960), (15, 1383168), (16, 1296720), (18, 1152640), (20, 1037376), (24, 864480), (30, 691584), (32, 648360), (36, 576320), (40, 518688), (45, 461056), (48, 432240), (60, 345792), (64, 324180), (72, 288160), (80, 259344), (90, 230528), (96, 216120), (120, 172896), (128, 162090), (144, 144080), (160, 129672), (180, 115264), (192, 108060), (240, 86448), (256, 81045), (288, 72040), (320, 64836), (360, 57632), (384, 54030), (480, 43224), (576, 36020), (640, 32418), (720, 28816), (768, 27015), (960, 21612), (1152, 18010), (1280, 16209), (1440, 14408), (1801, 11520), (1920, 10806), (2304, 9005), (2880, 7204), (3602, 5760), (3840, 5403)]