20389035

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2161}}^1$

素因数の和:2223

約数の個数: 32

約数和(自身を含む): 35491392

約数和(自身を除く): 15102357

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2161, 3145, 6483, 9435, 10805, 32415, 36737, 79957, 110211, 183685, 239871, 399785, 551055, 1199355, 1359269, 4077807, 6796345, 20389035]

約数ペア:

[(1, 20389035), (3, 6796345), (5, 4077807), (15, 1359269), (17, 1199355), (37, 551055), (51, 399785), (85, 239871), (111, 183685), (185, 110211), (255, 79957), (555, 36737), (629, 32415), (1887, 10805), (2161, 9435), (3145, 6483)]