20199665240

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{709}}^1\times {\mathrm{1831}}^1$

素因数の和:2940

約数の個数: 64

約数和(自身を含む): 45655272000

約数和(自身を除く): 25455606760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 709, 778, 1418, 1556, 1831, 1945, 2836, 3112, 3545, 3662, 3890, 5672, 7090, 7324, 7780, 9155, 14180, 14648, 15560, 18310, 28360, 36620, 73240, 275801, 551602, 712259, 1103204, 1298179, 1379005, 1424518, 2206408, 2596358, 2758010, 2849036, 3561295, 5192716, 5516020, 5698072, 6490895, 7122590, 10385432, 11032040, 12981790, 14245180, 25963580, 28490360, 51927160, 504991631, 1009983262, 2019966524, 2524958155, 4039933048, 5049916310, 10099832620, 20199665240]

約数ペア:

[(1, 20199665240), (2, 10099832620), (4, 5049916310), (5, 4039933048), (8, 2524958155), (10, 2019966524), (20, 1009983262), (40, 504991631), (389, 51927160), (709, 28490360), (778, 25963580), (1418, 14245180), (1556, 12981790), (1831, 11032040), (1945, 10385432), (2836, 7122590), (3112, 6490895), (3545, 5698072), (3662, 5516020), (3890, 5192716), (5672, 3561295), (7090, 2849036), (7324, 2758010), (7780, 2596358), (9155, 2206408), (14180, 1424518), (14648, 1379005), (15560, 1298179), (18310, 1103204), (28360, 712259), (36620, 551602), (73240, 275801)]