16481720

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{653}}^1$

素因数の和:1295

約数の個数: 32

約数和(自身を含む): 37199520

約数和(自身を除く): 20717800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 653, 1262, 1306, 2524, 2612, 3155, 3265, 5048, 5224, 6310, 6530, 12620, 13060, 25240, 26120, 412043, 824086, 1648172, 2060215, 3296344, 4120430, 8240860, 16481720]

約数ペア:

[(1, 16481720), (2, 8240860), (4, 4120430), (5, 3296344), (8, 2060215), (10, 1648172), (20, 824086), (40, 412043), (631, 26120), (653, 25240), (1262, 13060), (1306, 12620), (2524, 6530), (2612, 6310), (3155, 5224), (3265, 5048)]