20947472

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14387}}^1$

素因数の和:14415

約数の個数: 40

約数和(自身を含む): 49955136

約数和(自身を除く): 29007664

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14387, 28774, 57548, 100709, 115096, 187031, 201418, 230192, 374062, 402836, 748124, 805672, 1309217, 1496248, 1611344, 2618434, 2992496, 5236868, 10473736, 20947472]

約数ペア:

[(1, 20947472), (2, 10473736), (4, 5236868), (7, 2992496), (8, 2618434), (13, 1611344), (14, 1496248), (16, 1309217), (26, 805672), (28, 748124), (52, 402836), (56, 374062), (91, 230192), (104, 201418), (112, 187031), (182, 115096), (208, 100709), (364, 57548), (728, 28774), (1456, 14387)]