20587941

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 13781979

約数列:

[1, 3, 9, 11, 29, 33, 71, 87, 99, 101, 213, 261, 303, 319, 639, 781, 909, 957, 1111, 2059, 2343, 2871, 2929, 3333, 6177, 7029, 7171, 8787, 9999, 18531, 21513, 22649, 26361, 32219, 64539, 67947, 78881, 96657, 203841, 207959, 236643, 289971, 623877, 709929, 1871631, 2287549, 6862647, 20587941]

約数ペア:

[(1, 20587941), (3, 6862647), (9, 2287549), (11, 1871631), (29, 709929), (33, 623877), (71, 289971), (87, 236643), (99, 207959), (101, 203841), (213, 96657), (261, 78881), (303, 67947), (319, 64539), (639, 32219), (781, 26361), (909, 22649), (957, 21513), (1111, 18531), (2059, 9999), (2343, 8787), (2871, 7171), (2929, 7029), (3333, 6177)]