20609883

素因数分解:

$3^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 35560448

約数和(自身を除く): 14950565

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 163, 189, 223, 489, 567, 669, 1141, 1467, 1561, 2007, 3423, 4401, 4683, 6021, 10269, 13203, 14049, 18063, 30807, 36349, 42147, 92421, 109047, 126441, 254443, 327141, 763329, 981423, 2289987, 2944269, 6869961, 20609883]

約数ペア:

[(1, 20609883), (3, 6869961), (7, 2944269), (9, 2289987), (21, 981423), (27, 763329), (63, 327141), (81, 254443), (163, 126441), (189, 109047), (223, 92421), (489, 42147), (567, 36349), (669, 30807), (1141, 18063), (1467, 14049), (1561, 13203), (2007, 10269), (3423, 6021), (4401, 4683)]