7811720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1213}}^1$

素因数の和:1254

約数の個数: 64

約数和(自身を含む): 20977920

約数和(自身を除く): 13166200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1213, 1288, 1610, 2426, 3220, 4852, 6065, 6440, 8491, 9704, 12130, 16982, 24260, 27899, 33964, 42455, 48520, 55798, 67928, 84910, 111596, 139495, 169820, 195293, 223192, 278990, 339640, 390586, 557980, 781172, 976465, 1115960, 1562344, 1952930, 3905860, 7811720]

約数ペア:

[(1, 7811720), (2, 3905860), (4, 1952930), (5, 1562344), (7, 1115960), (8, 976465), (10, 781172), (14, 557980), (20, 390586), (23, 339640), (28, 278990), (35, 223192), (40, 195293), (46, 169820), (56, 139495), (70, 111596), (92, 84910), (115, 67928), (140, 55798), (161, 48520), (184, 42455), (230, 33964), (280, 27899), (322, 24260), (460, 16982), (644, 12130), (805, 9704), (920, 8491), (1213, 6440), (1288, 6065), (1610, 4852), (2426, 3220)]