21173240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48121}}^1$

素因数の和:48143

約数の個数: 32

約数和(自身を含む): 51971760

約数和(自身を除く): 30798520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48121, 96242, 192484, 240605, 384968, 481210, 529331, 962420, 1058662, 1924840, 2117324, 2646655, 4234648, 5293310, 10586620, 21173240]

約数ペア:

[(1, 21173240), (2, 10586620), (4, 5293310), (5, 4234648), (8, 2646655), (10, 2117324), (11, 1924840), (20, 1058662), (22, 962420), (40, 529331), (44, 481210), (55, 384968), (88, 240605), (110, 192484), (220, 96242), (440, 48121)]