20228985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{431}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 20206215

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 149, 315, 431, 447, 745, 1043, 1293, 1341, 2155, 2235, 3017, 3129, 3879, 5215, 6465, 6705, 9051, 9387, 15085, 15645, 19395, 27153, 45255, 46935, 64219, 135765, 192657, 321095, 449533, 577971, 963285, 1348599, 2247665, 2889855, 4045797, 6742995, 20228985]

約数ペア:

[(1, 20228985), (3, 6742995), (5, 4045797), (7, 2889855), (9, 2247665), (15, 1348599), (21, 963285), (35, 577971), (45, 449533), (63, 321095), (105, 192657), (149, 135765), (315, 64219), (431, 46935), (447, 45255), (745, 27153), (1043, 19395), (1293, 15645), (1341, 15085), (2155, 9387), (2235, 9051), (3017, 6705), (3129, 6465), (3879, 5215)]