47173820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 101606400

約数和(自身を除く): 54432580

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 239, 278, 284, 355, 478, 556, 695, 710, 956, 1195, 1390, 1420, 2390, 2780, 4780, 9869, 16969, 19738, 33221, 33938, 39476, 49345, 66442, 67876, 84845, 98690, 132884, 166105, 169690, 197380, 332210, 339380, 664420, 2358691, 4717382, 9434764, 11793455, 23586910, 47173820]

約数ペア:

[(1, 47173820), (2, 23586910), (4, 11793455), (5, 9434764), (10, 4717382), (20, 2358691), (71, 664420), (139, 339380), (142, 332210), (239, 197380), (278, 169690), (284, 166105), (355, 132884), (478, 98690), (556, 84845), (695, 67876), (710, 66442), (956, 49345), (1195, 39476), (1390, 33938), (1420, 33221), (2390, 19738), (2780, 16969), (4780, 9869)]