21522280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41389}}^1$

素因数の和:41413

約数の個数: 32

約数和(自身を含む): 52151400

約数和(自身を除く): 30629120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41389, 82778, 165556, 206945, 331112, 413890, 538057, 827780, 1076114, 1655560, 2152228, 2690285, 4304456, 5380570, 10761140, 21522280]

約数ペア:

[(1, 21522280), (2, 10761140), (4, 5380570), (5, 4304456), (8, 2690285), (10, 2152228), (13, 1655560), (20, 1076114), (26, 827780), (40, 538057), (52, 413890), (65, 331112), (104, 206945), (130, 165556), (260, 82778), (520, 41389)]