18847647

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2557}}^1$

素因数の和:2589

約数の個数: 40

約数和(自身を含む): 34666016

約数和(自身を除く): 15818369

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2557, 7371, 7671, 17899, 23013, 33241, 53697, 69039, 99723, 161091, 207117, 232687, 299169, 483273, 698061, 897507, 1449819, 2094183, 2692521, 6282549, 18847647]

約数ペア:

[(1, 18847647), (3, 6282549), (7, 2692521), (9, 2094183), (13, 1449819), (21, 897507), (27, 698061), (39, 483273), (63, 299169), (81, 232687), (91, 207117), (117, 161091), (189, 99723), (273, 69039), (351, 53697), (567, 33241), (819, 23013), (1053, 17899), (2457, 7671), (2557, 7371)]