21215697957

素因数分解:

$3^5\times {\mathrm{107}}^1\times {\mathrm{223}}^1\times {\mathrm{3659}}^1$

素因数の和:4004

約数の個数: 48

約数和(自身を含む): 32229550080

約数和(自身を除く): 11013852123

約数列:

[1, 3, 9, 27, 81, 107, 223, 243, 321, 669, 963, 2007, 2889, 3659, 6021, 8667, 10977, 18063, 23861, 26001, 32931, 54189, 71583, 98793, 214749, 296379, 391513, 644247, 815957, 889137, 1174539, 1932741, 2447871, 3523617, 5798223, 7343613, 10570851, 22030839, 31712553, 66092517, 87307399, 95137659, 198277551, 261922197, 785766591, 2357299773, 7071899319, 21215697957]

約数ペア:

[(1, 21215697957), (3, 7071899319), (9, 2357299773), (27, 785766591), (81, 261922197), (107, 198277551), (223, 95137659), (243, 87307399), (321, 66092517), (669, 31712553), (963, 22030839), (2007, 10570851), (2889, 7343613), (3659, 5798223), (6021, 3523617), (8667, 2447871), (10977, 1932741), (18063, 1174539), (23861, 889137), (26001, 815957), (32931, 644247), (54189, 391513), (71583, 296379), (98793, 214749)]