218939355

素因数分解:

$3^5\times 5^1\times {\mathrm{367}}^1\times {\mathrm{491}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 395426304

約数和(自身を除く): 176486949

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 367, 405, 491, 1101, 1215, 1473, 1835, 2455, 3303, 4419, 5505, 7365, 9909, 13257, 16515, 22095, 29727, 39771, 49545, 66285, 89181, 119313, 148635, 180197, 198855, 445905, 540591, 596565, 900985, 1621773, 2702955, 4865319, 8108865, 14595957, 24326595, 43787871, 72979785, 218939355]

約数ペア:

[(1, 218939355), (3, 72979785), (5, 43787871), (9, 24326595), (15, 14595957), (27, 8108865), (45, 4865319), (81, 2702955), (135, 1621773), (243, 900985), (367, 596565), (405, 540591), (491, 445905), (1101, 198855), (1215, 180197), (1473, 148635), (1835, 119313), (2455, 89181), (3303, 66285), (4419, 49545), (5505, 39771), (7365, 29727), (9909, 22095), (13257, 16515)]