21739845

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 35769600

約数和(自身を除く): 14029755

約数列:

[1, 3, 5, 15, 71, 137, 149, 213, 355, 411, 447, 685, 745, 1065, 2055, 2235, 9727, 10579, 20413, 29181, 31737, 48635, 52895, 61239, 102065, 145905, 158685, 306195, 1449323, 4347969, 7246615, 21739845]

約数ペア:

[(1, 21739845), (3, 7246615), (5, 4347969), (15, 1449323), (71, 306195), (137, 158685), (149, 145905), (213, 102065), (355, 61239), (411, 52895), (447, 48635), (685, 31737), (745, 29181), (1065, 20413), (2055, 10579), (2235, 9727)]