21105201

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 31667328

約数和(自身を除く): 10562127

約数列:

[1, 3, 13, 39, 41, 67, 123, 197, 201, 533, 591, 871, 1599, 2561, 2613, 2747, 7683, 8077, 8241, 13199, 24231, 35711, 39597, 105001, 107133, 171587, 315003, 514761, 541159, 1623477, 7035067, 21105201]

約数ペア:

[(1, 21105201), (3, 7035067), (13, 1623477), (39, 541159), (41, 514761), (67, 315003), (123, 171587), (197, 107133), (201, 105001), (533, 39597), (591, 35711), (871, 24231), (1599, 13199), (2561, 8241), (2613, 8077), (2747, 7683)]