20497100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15767}}^1$

素因数の和:15794

約数の個数: 36

約数和(自身を含む): 47903184

約数和(自身を除く): 27406084

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15767, 31534, 63068, 78835, 157670, 204971, 315340, 394175, 409942, 788350, 819884, 1024855, 1576700, 2049710, 4099420, 5124275, 10248550, 20497100]

約数ペア:

[(1, 20497100), (2, 10248550), (4, 5124275), (5, 4099420), (10, 2049710), (13, 1576700), (20, 1024855), (25, 819884), (26, 788350), (50, 409942), (52, 394175), (65, 315340), (100, 204971), (130, 157670), (260, 78835), (325, 63068), (650, 31534), (1300, 15767)]