20871918

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{6781}}^1$

素因数の和:6814

約数の個数: 40

約数和(自身を含む): 49237320

約数和(自身を除く): 28365402

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 342, 513, 1026, 1539, 3078, 6781, 13562, 20343, 40686, 61029, 122058, 128839, 183087, 257678, 366174, 386517, 549261, 773034, 1098522, 1159551, 2319102, 3478653, 6957306, 10435959, 20871918]

約数ペア:

[(1, 20871918), (2, 10435959), (3, 6957306), (6, 3478653), (9, 2319102), (18, 1159551), (19, 1098522), (27, 773034), (38, 549261), (54, 386517), (57, 366174), (81, 257678), (114, 183087), (162, 128839), (171, 122058), (342, 61029), (513, 40686), (1026, 20343), (1539, 13562), (3078, 6781)]