20496220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2621}}^1$

素因数の和:2670

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 27077348

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2621, 3910, 5242, 7820, 10484, 13105, 26210, 44557, 52420, 60283, 89114, 120566, 178228, 222785, 241132, 301415, 445570, 602830, 891140, 1024811, 1205660, 2049622, 4099244, 5124055, 10248110, 20496220]

約数ペア:

[(1, 20496220), (2, 10248110), (4, 5124055), (5, 4099244), (10, 2049622), (17, 1205660), (20, 1024811), (23, 891140), (34, 602830), (46, 445570), (68, 301415), (85, 241132), (92, 222785), (115, 178228), (170, 120566), (230, 89114), (340, 60283), (391, 52420), (460, 44557), (782, 26210), (1564, 13105), (1955, 10484), (2621, 7820), (3910, 5242)]