20421885

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2029}}^1$

素因数の和:2109

約数の個数: 32

約数和(自身を含む): 36247680

約数和(自身を除く): 15825795

約数列:

[1, 3, 5, 11, 15, 33, 55, 61, 165, 183, 305, 671, 915, 2013, 2029, 3355, 6087, 10065, 10145, 22319, 30435, 66957, 111595, 123769, 334785, 371307, 618845, 1361459, 1856535, 4084377, 6807295, 20421885]

約数ペア:

[(1, 20421885), (3, 6807295), (5, 4084377), (11, 1856535), (15, 1361459), (33, 618845), (55, 371307), (61, 334785), (165, 123769), (183, 111595), (305, 66957), (671, 30435), (915, 22319), (2013, 10145), (2029, 10065), (3355, 6087)]