21930345

素因数分解:

$3^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{313}}^1$

素因数の和:503

約数の個数: 40

約数和(自身を含む): 39665736

約数和(自身を除く): 17735391

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 173, 313, 405, 519, 865, 939, 1557, 1565, 2595, 2817, 4671, 4695, 7785, 8451, 14013, 14085, 23355, 25353, 42255, 54149, 70065, 126765, 162447, 270745, 487341, 812235, 1462023, 2436705, 4386069, 7310115, 21930345]

約数ペア:

[(1, 21930345), (3, 7310115), (5, 4386069), (9, 2436705), (15, 1462023), (27, 812235), (45, 487341), (81, 270745), (135, 162447), (173, 126765), (313, 70065), (405, 54149), (519, 42255), (865, 25353), (939, 23355), (1557, 14085), (1565, 14013), (2595, 8451), (2817, 7785), (4671, 4695)]