21904365

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{919}}^1$

素因数の和:1161

約数の個数: 32

約数和(自身を含む): 40273920

約数和(自身を除く): 18369555

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 227, 681, 919, 1135, 1589, 2757, 3405, 4595, 4767, 6433, 7945, 13785, 19299, 23835, 32165, 96495, 208613, 625839, 1043065, 1460291, 3129195, 4380873, 7301455, 21904365]

約数ペア:

[(1, 21904365), (3, 7301455), (5, 4380873), (7, 3129195), (15, 1460291), (21, 1043065), (35, 625839), (105, 208613), (227, 96495), (681, 32165), (919, 23835), (1135, 19299), (1589, 13785), (2757, 7945), (3405, 6433), (4595, 4767)]