19721808

素因数分解:

$2^4\times 3^2\times {\mathrm{151}}^1\times {\mathrm{907}}^1$

素因数の和:1072

約数の個数: 60

約数和(自身を含む): 55620448

約数和(自身を除く): 35898640

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 151, 302, 453, 604, 906, 907, 1208, 1359, 1812, 1814, 2416, 2718, 2721, 3624, 3628, 5436, 5442, 7248, 7256, 8163, 10872, 10884, 14512, 16326, 21744, 21768, 32652, 43536, 65304, 130608, 136957, 273914, 410871, 547828, 821742, 1095656, 1232613, 1643484, 2191312, 2465226, 3286968, 4930452, 6573936, 9860904, 19721808]

約数ペア:

[(1, 19721808), (2, 9860904), (3, 6573936), (4, 4930452), (6, 3286968), (8, 2465226), (9, 2191312), (12, 1643484), (16, 1232613), (18, 1095656), (24, 821742), (36, 547828), (48, 410871), (72, 273914), (144, 136957), (151, 130608), (302, 65304), (453, 43536), (604, 32652), (906, 21768), (907, 21744), (1208, 16326), (1359, 14512), (1812, 10884), (1814, 10872), (2416, 8163), (2718, 7256), (2721, 7248), (3624, 5442), (3628, 5436)]