399647521

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{761}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 512064000

約数和(自身を除く): 112416479

約数列:

[1, 7, 13, 29, 91, 199, 203, 377, 761, 1393, 2587, 2639, 5327, 5771, 9893, 18109, 22069, 40397, 69251, 75023, 151439, 154483, 286897, 525161, 1060073, 1968707, 2008279, 4391731, 13780949, 30742117, 57092503, 399647521]

約数ペア:

[(1, 399647521), (7, 57092503), (13, 30742117), (29, 13780949), (91, 4391731), (199, 2008279), (203, 1968707), (377, 1060073), (761, 525161), (1393, 286897), (2587, 154483), (2639, 151439), (5327, 75023), (5771, 69251), (9893, 40397), (18109, 22069)]