21749820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{4073}}^1$

素因数の和:4174

約数の個数: 48

約数和(自身を含む): 61598880

約数和(自身を除く): 39849060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 89, 178, 267, 356, 445, 534, 890, 1068, 1335, 1780, 2670, 4073, 5340, 8146, 12219, 16292, 20365, 24438, 40730, 48876, 61095, 81460, 122190, 244380, 362497, 724994, 1087491, 1449988, 1812485, 2174982, 3624970, 4349964, 5437455, 7249940, 10874910, 21749820]

約数ペア:

[(1, 21749820), (2, 10874910), (3, 7249940), (4, 5437455), (5, 4349964), (6, 3624970), (10, 2174982), (12, 1812485), (15, 1449988), (20, 1087491), (30, 724994), (60, 362497), (89, 244380), (178, 122190), (267, 81460), (356, 61095), (445, 48876), (534, 40730), (890, 24438), (1068, 20365), (1335, 16292), (1780, 12219), (2670, 8146), (4073, 5340)]