19990815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3307}}^1$

素因数の和:3359

約数の個数: 32

約数和(自身を含む): 35567616

約数和(自身を除く): 15576801

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3307, 6045, 9921, 16535, 42991, 49605, 102517, 128973, 214955, 307551, 512585, 644865, 1332721, 1537755, 3998163, 6663605, 19990815]

約数ペア:

[(1, 19990815), (3, 6663605), (5, 3998163), (13, 1537755), (15, 1332721), (31, 644865), (39, 512585), (65, 307551), (93, 214955), (155, 128973), (195, 102517), (403, 49605), (465, 42991), (1209, 16535), (2015, 9921), (3307, 6045)]