20897803232

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{809}}^1\times {\mathrm{18773}}^1$

素因数の和:19635

約数の個数: 48

約数和(自身を含む): 42153637680

約数和(自身を除く): 21255834448

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 809, 1376, 1618, 3236, 6472, 12944, 18773, 25888, 34787, 37546, 69574, 75092, 139148, 150184, 278296, 300368, 556592, 600736, 807239, 1113184, 1614478, 3228956, 6457912, 12915824, 15187357, 25831648, 30374714, 60749428, 121498856, 242997712, 485995424, 653056351, 1306112702, 2612225404, 5224450808, 10448901616, 20897803232]

約数ペア:

[(1, 20897803232), (2, 10448901616), (4, 5224450808), (8, 2612225404), (16, 1306112702), (32, 653056351), (43, 485995424), (86, 242997712), (172, 121498856), (344, 60749428), (688, 30374714), (809, 25831648), (1376, 15187357), (1618, 12915824), (3236, 6457912), (6472, 3228956), (12944, 1614478), (18773, 1113184), (25888, 807239), (34787, 600736), (37546, 556592), (69574, 300368), (75092, 278296), (139148, 150184)]