20942520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2861}}^1$

素因数の和:2936

約数の個数: 64

約数和(自身を含む): 63879840

約数和(自身を除く): 42937320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 2861, 3660, 5722, 7320, 8583, 11444, 14305, 17166, 22888, 28610, 34332, 42915, 57220, 68664, 85830, 114440, 171660, 174521, 343320, 349042, 523563, 698084, 872605, 1047126, 1396168, 1745210, 2094252, 2617815, 3490420, 4188504, 5235630, 6980840, 10471260, 20942520]

約数ペア:

[(1, 20942520), (2, 10471260), (3, 6980840), (4, 5235630), (5, 4188504), (6, 3490420), (8, 2617815), (10, 2094252), (12, 1745210), (15, 1396168), (20, 1047126), (24, 872605), (30, 698084), (40, 523563), (60, 349042), (61, 343320), (120, 174521), (122, 171660), (183, 114440), (244, 85830), (305, 68664), (366, 57220), (488, 42915), (610, 34332), (732, 28610), (915, 22888), (1220, 17166), (1464, 14305), (1830, 11444), (2440, 8583), (2861, 7320), (3660, 5722)]