19890390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{51001}}^1$

素因数の和:51024

約数の個数: 32

約数和(自身を含む): 51410016

約数和(自身を除く): 31519626

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 51001, 102002, 153003, 255005, 306006, 510010, 663013, 765015, 1326026, 1530030, 1989039, 3315065, 3978078, 6630130, 9945195, 19890390]

約数ペア:

[(1, 19890390), (2, 9945195), (3, 6630130), (5, 3978078), (6, 3315065), (10, 1989039), (13, 1530030), (15, 1326026), (26, 765015), (30, 663013), (39, 510010), (65, 306006), (78, 255005), (130, 153003), (195, 102002), (390, 51001)]