21725000

素因数分解:

$2^3\times 5^5\times {\mathrm{11}}^1\times {\mathrm{79}}^1$

素因数の和:121

約数の個数: 96

約数和(自身を含む): 56246400

約数和(自身を除く): 34521400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 79, 88, 100, 110, 125, 158, 200, 220, 250, 275, 316, 395, 440, 500, 550, 625, 632, 790, 869, 1000, 1100, 1250, 1375, 1580, 1738, 1975, 2200, 2500, 2750, 3125, 3160, 3476, 3950, 4345, 5000, 5500, 6250, 6875, 6952, 7900, 8690, 9875, 11000, 12500, 13750, 15800, 17380, 19750, 21725, 25000, 27500, 34375, 34760, 39500, 43450, 49375, 55000, 68750, 79000, 86900, 98750, 108625, 137500, 173800, 197500, 217250, 246875, 275000, 395000, 434500, 493750, 543125, 869000, 987500, 1086250, 1975000, 2172500, 2715625, 4345000, 5431250, 10862500, 21725000]

約数ペア:

[(1, 21725000), (2, 10862500), (4, 5431250), (5, 4345000), (8, 2715625), (10, 2172500), (11, 1975000), (20, 1086250), (22, 987500), (25, 869000), (40, 543125), (44, 493750), (50, 434500), (55, 395000), (79, 275000), (88, 246875), (100, 217250), (110, 197500), (125, 173800), (158, 137500), (200, 108625), (220, 98750), (250, 86900), (275, 79000), (316, 68750), (395, 55000), (440, 49375), (500, 43450), (550, 39500), (625, 34760), (632, 34375), (790, 27500), (869, 25000), (1000, 21725), (1100, 19750), (1250, 17380), (1375, 15800), (1580, 13750), (1738, 12500), (1975, 11000), (2200, 9875), (2500, 8690), (2750, 7900), (3125, 6952), (3160, 6875), (3476, 6250), (3950, 5500), (4345, 5000)]