20987742

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2593}}^1$

素因数の和:2688

約数の個数: 32

約数和(自身を含む): 44824320

約数和(自身を除く): 23836578

約数列:

[1, 2, 3, 6, 19, 38, 57, 71, 114, 142, 213, 426, 1349, 2593, 2698, 4047, 5186, 7779, 8094, 15558, 49267, 98534, 147801, 184103, 295602, 368206, 552309, 1104618, 3497957, 6995914, 10493871, 20987742]

約数ペア:

[(1, 20987742), (2, 10493871), (3, 6995914), (6, 3497957), (19, 1104618), (38, 552309), (57, 368206), (71, 295602), (114, 184103), (142, 147801), (213, 98534), (426, 49267), (1349, 15558), (2593, 8094), (2698, 7779), (4047, 5186)]