20587960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3929}}^1$

素因数の和:4071

約数の個数: 32

約数和(自身を含む): 46688400

約数和(自身を除く): 26100440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3929, 5240, 7858, 15716, 19645, 31432, 39290, 78580, 157160, 514699, 1029398, 2058796, 2573495, 4117592, 5146990, 10293980, 20587960]

約数ペア:

[(1, 20587960), (2, 10293980), (4, 5146990), (5, 4117592), (8, 2573495), (10, 2058796), (20, 1029398), (40, 514699), (131, 157160), (262, 78580), (524, 39290), (655, 31432), (1048, 19645), (1310, 15716), (2620, 7858), (3929, 5240)]