81947650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{421}}^1$

素因数の和:679

約数の個数: 48

約数和(自身を含む): 162478440

約数和(自身を除く): 80530790

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 229, 421, 425, 458, 842, 850, 1145, 2105, 2290, 3893, 4210, 5725, 7157, 7786, 10525, 11450, 14314, 19465, 21050, 35785, 38930, 71570, 96409, 97325, 178925, 192818, 194650, 357850, 482045, 964090, 1638953, 2410225, 3277906, 4820450, 8194765, 16389530, 40973825, 81947650]

約数ペア:

[(1, 81947650), (2, 40973825), (5, 16389530), (10, 8194765), (17, 4820450), (25, 3277906), (34, 2410225), (50, 1638953), (85, 964090), (170, 482045), (229, 357850), (421, 194650), (425, 192818), (458, 178925), (842, 97325), (850, 96409), (1145, 71570), (2105, 38930), (2290, 35785), (3893, 21050), (4210, 19465), (5725, 14314), (7157, 11450), (7786, 10525)]