206908900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2381}}^1$

素因数の和:2485

約数の個数: 72

約数和(自身を含む): 496218240

約数和(自身を除く): 289309340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 79, 100, 110, 158, 220, 275, 316, 395, 550, 790, 869, 1100, 1580, 1738, 1975, 2381, 3476, 3950, 4345, 4762, 7900, 8690, 9524, 11905, 17380, 21725, 23810, 26191, 43450, 47620, 52382, 59525, 86900, 104764, 119050, 130955, 188099, 238100, 261910, 376198, 523820, 654775, 752396, 940495, 1309550, 1880990, 2069089, 2619100, 3761980, 4138178, 4702475, 8276356, 9404950, 10345445, 18809900, 20690890, 41381780, 51727225, 103454450, 206908900]

約数ペア:

[(1, 206908900), (2, 103454450), (4, 51727225), (5, 41381780), (10, 20690890), (11, 18809900), (20, 10345445), (22, 9404950), (25, 8276356), (44, 4702475), (50, 4138178), (55, 3761980), (79, 2619100), (100, 2069089), (110, 1880990), (158, 1309550), (220, 940495), (275, 752396), (316, 654775), (395, 523820), (550, 376198), (790, 261910), (869, 238100), (1100, 188099), (1580, 130955), (1738, 119050), (1975, 104764), (2381, 86900), (3476, 59525), (3950, 52382), (4345, 47620), (4762, 43450), (7900, 26191), (8690, 23810), (9524, 21725), (11905, 17380)]