21851115

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 41997312

約数和(自身を除く): 20146197

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 61, 65, 143, 165, 167, 183, 195, 305, 429, 501, 671, 715, 793, 835, 915, 1837, 2013, 2145, 2171, 2379, 2505, 3355, 3965, 5511, 6513, 8723, 9185, 10065, 10187, 10855, 11895, 23881, 26169, 27555, 30561, 32565, 43615, 50935, 71643, 112057, 119405, 130845, 132431, 152805, 336171, 358215, 397293, 560285, 662155, 1456741, 1680855, 1986465, 4370223, 7283705, 21851115]

約数ペア:

[(1, 21851115), (3, 7283705), (5, 4370223), (11, 1986465), (13, 1680855), (15, 1456741), (33, 662155), (39, 560285), (55, 397293), (61, 358215), (65, 336171), (143, 152805), (165, 132431), (167, 130845), (183, 119405), (195, 112057), (305, 71643), (429, 50935), (501, 43615), (671, 32565), (715, 30561), (793, 27555), (835, 26169), (915, 23881), (1837, 11895), (2013, 10855), (2145, 10187), (2171, 10065), (2379, 9185), (2505, 8723), (3355, 6513), (3965, 5511)]