19905552

素因数分解:

$2^4\times 3^2\times {\mathrm{137}}^1\times {\mathrm{1009}}^1$

素因数の和:1160

約数の個数: 60

約数和(自身を含む): 56170140

約数和(自身を除く): 36264588

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 137, 144, 274, 411, 548, 822, 1009, 1096, 1233, 1644, 2018, 2192, 2466, 3027, 3288, 4036, 4932, 6054, 6576, 8072, 9081, 9864, 12108, 16144, 18162, 19728, 24216, 36324, 48432, 72648, 138233, 145296, 276466, 414699, 552932, 829398, 1105864, 1244097, 1658796, 2211728, 2488194, 3317592, 4976388, 6635184, 9952776, 19905552]

約数ペア:

[(1, 19905552), (2, 9952776), (3, 6635184), (4, 4976388), (6, 3317592), (8, 2488194), (9, 2211728), (12, 1658796), (16, 1244097), (18, 1105864), (24, 829398), (36, 552932), (48, 414699), (72, 276466), (137, 145296), (144, 138233), (274, 72648), (411, 48432), (548, 36324), (822, 24216), (1009, 19728), (1096, 18162), (1233, 16144), (1644, 12108), (2018, 9864), (2192, 9081), (2466, 8072), (3027, 6576), (3288, 6054), (4036, 4932)]