21472220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:291

約数の個数: 96

約数和(自身を含む): 57286656

約数和(自身を除く): 35814436

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 73, 77, 110, 140, 146, 154, 191, 220, 292, 308, 365, 382, 385, 511, 730, 764, 770, 803, 955, 1022, 1337, 1460, 1540, 1606, 1910, 2044, 2101, 2555, 2674, 3212, 3820, 4015, 4202, 5110, 5348, 5621, 6685, 8030, 8404, 10220, 10505, 11242, 13370, 13943, 14707, 16060, 21010, 22484, 26740, 27886, 28105, 29414, 42020, 55772, 56210, 58828, 69715, 73535, 97601, 112420, 139430, 147070, 153373, 195202, 278860, 294140, 306746, 390404, 488005, 613492, 766865, 976010, 1073611, 1533730, 1952020, 2147222, 3067460, 4294444, 5368055, 10736110, 21472220]

約数ペア:

[(1, 21472220), (2, 10736110), (4, 5368055), (5, 4294444), (7, 3067460), (10, 2147222), (11, 1952020), (14, 1533730), (20, 1073611), (22, 976010), (28, 766865), (35, 613492), (44, 488005), (55, 390404), (70, 306746), (73, 294140), (77, 278860), (110, 195202), (140, 153373), (146, 147070), (154, 139430), (191, 112420), (220, 97601), (292, 73535), (308, 69715), (365, 58828), (382, 56210), (385, 55772), (511, 42020), (730, 29414), (764, 28105), (770, 27886), (803, 26740), (955, 22484), (1022, 21010), (1337, 16060), (1460, 14707), (1540, 13943), (1606, 13370), (1910, 11242), (2044, 10505), (2101, 10220), (2555, 8404), (2674, 8030), (3212, 6685), (3820, 5621), (4015, 5348), (4202, 5110)]