212909715

素因数分解:

$3^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4013}}^1$

素因数の和:4161

約数の個数: 40

約数和(自身を含む): 384669648

約数和(自身を除く): 171759933

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 131, 135, 393, 405, 655, 1179, 1965, 3537, 4013, 5895, 10611, 12039, 17685, 20065, 36117, 53055, 60195, 108351, 180585, 325053, 525703, 541755, 1577109, 1625265, 2628515, 4731327, 7885545, 14193981, 23656635, 42581943, 70969905, 212909715]

約数ペア:

[(1, 212909715), (3, 70969905), (5, 42581943), (9, 23656635), (15, 14193981), (27, 7885545), (45, 4731327), (81, 2628515), (131, 1625265), (135, 1577109), (393, 541755), (405, 525703), (655, 325053), (1179, 180585), (1965, 108351), (3537, 60195), (4013, 53055), (5895, 36117), (10611, 20065), (12039, 17685)]