221448920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71899}}^1$

素因数の和:71928

約数の個数: 64

約数和(自身を含む): 621216000

約数和(自身を除く): 399767080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 71899, 143798, 287596, 359495, 503293, 575192, 718990, 790889, 1006586, 1437980, 1581778, 2013172, 2516465, 2875960, 3163556, 3954445, 4026344, 5032930, 5536223, 6327112, 7908890, 10065860, 11072446, 15817780, 20131720, 22144892, 27681115, 31635560, 44289784, 55362230, 110724460, 221448920]

約数ペア:

[(1, 221448920), (2, 110724460), (4, 55362230), (5, 44289784), (7, 31635560), (8, 27681115), (10, 22144892), (11, 20131720), (14, 15817780), (20, 11072446), (22, 10065860), (28, 7908890), (35, 6327112), (40, 5536223), (44, 5032930), (55, 4026344), (56, 3954445), (70, 3163556), (77, 2875960), (88, 2516465), (110, 2013172), (140, 1581778), (154, 1437980), (220, 1006586), (280, 790889), (308, 718990), (385, 575192), (440, 503293), (616, 359495), (770, 287596), (1540, 143798), (3080, 71899)]