19700420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{379}}^1$

素因数の和:524

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 23966140

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 113, 115, 226, 230, 379, 452, 460, 565, 758, 1130, 1516, 1895, 2260, 2599, 3790, 5198, 7580, 8717, 10396, 12995, 17434, 25990, 34868, 42827, 43585, 51980, 85654, 87170, 171308, 174340, 214135, 428270, 856540, 985021, 1970042, 3940084, 4925105, 9850210, 19700420]

約数ペア:

[(1, 19700420), (2, 9850210), (4, 4925105), (5, 3940084), (10, 1970042), (20, 985021), (23, 856540), (46, 428270), (92, 214135), (113, 174340), (115, 171308), (226, 87170), (230, 85654), (379, 51980), (452, 43585), (460, 42827), (565, 34868), (758, 25990), (1130, 17434), (1516, 12995), (1895, 10396), (2260, 8717), (2599, 7580), (3790, 5198)]