20407440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3697}}^1$

素因数の和:3736

約数の個数: 80

約数和(自身を含む): 66031488

約数和(自身を除く): 45624048

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3697, 5520, 7394, 11091, 14788, 18485, 22182, 29576, 36970, 44364, 55455, 59152, 73940, 85031, 88728, 110910, 147880, 170062, 177456, 221820, 255093, 295760, 340124, 425155, 443640, 510186, 680248, 850310, 887280, 1020372, 1275465, 1360496, 1700620, 2040744, 2550930, 3401240, 4081488, 5101860, 6802480, 10203720, 20407440]

約数ペア:

[(1, 20407440), (2, 10203720), (3, 6802480), (4, 5101860), (5, 4081488), (6, 3401240), (8, 2550930), (10, 2040744), (12, 1700620), (15, 1360496), (16, 1275465), (20, 1020372), (23, 887280), (24, 850310), (30, 680248), (40, 510186), (46, 443640), (48, 425155), (60, 340124), (69, 295760), (80, 255093), (92, 221820), (115, 177456), (120, 170062), (138, 147880), (184, 110910), (230, 88728), (240, 85031), (276, 73940), (345, 59152), (368, 55455), (460, 44364), (552, 36970), (690, 29576), (920, 22182), (1104, 18485), (1380, 14788), (1840, 11091), (2760, 7394), (3697, 5520)]