21480250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 44883072

約数和(自身を除く): 23402822

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 73, 107, 110, 125, 146, 214, 250, 275, 365, 535, 550, 730, 803, 1070, 1177, 1375, 1606, 1825, 2354, 2675, 2750, 3650, 4015, 5350, 5885, 7811, 8030, 9125, 11770, 13375, 15622, 18250, 20075, 26750, 29425, 39055, 40150, 58850, 78110, 85921, 100375, 147125, 171842, 195275, 200750, 294250, 390550, 429605, 859210, 976375, 1952750, 2148025, 4296050, 10740125, 21480250]

約数ペア:

[(1, 21480250), (2, 10740125), (5, 4296050), (10, 2148025), (11, 1952750), (22, 976375), (25, 859210), (50, 429605), (55, 390550), (73, 294250), (107, 200750), (110, 195275), (125, 171842), (146, 147125), (214, 100375), (250, 85921), (275, 78110), (365, 58850), (535, 40150), (550, 39055), (730, 29425), (803, 26750), (1070, 20075), (1177, 18250), (1375, 15622), (1606, 13375), (1825, 11770), (2354, 9125), (2675, 8030), (2750, 7811), (3650, 5885), (4015, 5350)]