20415808

素因数分解:

$2^6\times 7^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:447

約数の個数: 56

約数和(自身を含む): 46736000

約数和(自身を除く): 26320192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 199, 224, 229, 398, 448, 458, 796, 916, 1393, 1592, 1603, 1832, 2786, 3184, 3206, 3664, 5572, 6368, 6412, 7328, 11144, 12736, 12824, 14656, 22288, 25648, 44576, 45571, 51296, 89152, 91142, 102592, 182284, 318997, 364568, 637994, 729136, 1275988, 1458272, 2551976, 2916544, 5103952, 10207904, 20415808]

約数ペア:

[(1, 20415808), (2, 10207904), (4, 5103952), (7, 2916544), (8, 2551976), (14, 1458272), (16, 1275988), (28, 729136), (32, 637994), (56, 364568), (64, 318997), (112, 182284), (199, 102592), (224, 91142), (229, 89152), (398, 51296), (448, 45571), (458, 44576), (796, 25648), (916, 22288), (1393, 14656), (1592, 12824), (1603, 12736), (1832, 11144), (2786, 7328), (3184, 6412), (3206, 6368), (3664, 5572)]