21132840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2887}}^1$

素因数の和:2962

約数の個数: 64

約数和(自身を含む): 64460160

約数和(自身を除く): 43327320

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, 2887, 3660, 5774, 7320, 8661, 11548, 14435, 17322, 23096, 28870, 34644, 43305, 57740, 69288, 86610, 115480, 173220, 176107, 346440, 352214, 528321, 704428, 880535, 1056642, 1408856, 1761070, 2113284, 2641605, 3522140, 4226568, 5283210, 7044280, 10566420, 21132840]

約数ペア:

[(1, 21132840), (2, 10566420), (3, 7044280), (4, 5283210), (5, 4226568), (6, 3522140), (8, 2641605), (10, 2113284), (12, 1761070), (15, 1408856), (20, 1056642), (24, 880535), (30, 704428), (40, 528321), (60, 352214), (61, 346440), (120, 176107), (122, 173220), (183, 115480), (244, 86610), (305, 69288), (366, 57740), (488, 43305), (610, 34644), (732, 28870), (915, 23096), (1220, 17322), (1464, 14435), (1830, 11548), (2440, 8661), (2887, 7320), (3660, 5774)]