21412520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31489}}^1$

素因数の和:31517

約数の個数: 32

約数和(自身を含む): 51013800

約数和(自身を除く): 29601280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31489, 62978, 125956, 157445, 251912, 314890, 535313, 629780, 1070626, 1259560, 2141252, 2676565, 4282504, 5353130, 10706260, 21412520]

約数ペア:

[(1, 21412520), (2, 10706260), (4, 5353130), (5, 4282504), (8, 2676565), (10, 2141252), (17, 1259560), (20, 1070626), (34, 629780), (40, 535313), (68, 314890), (85, 251912), (136, 157445), (170, 125956), (340, 62978), (680, 31489)]