21642219

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 32432400

約数和(自身を除く): 10790181

約数列:

[1, 3, 9, 41, 89, 123, 267, 369, 659, 801, 1977, 3649, 5931, 10947, 27019, 32841, 58651, 81057, 175953, 243171, 527859, 2404691, 7214073, 21642219]

約数ペア:

[(1, 21642219), (3, 7214073), (9, 2404691), (41, 527859), (89, 243171), (123, 175953), (267, 81057), (369, 58651), (659, 32841), (801, 27019), (1977, 10947), (3649, 5931)]