21913970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1669}}^1$

素因数の和:1790

約数の個数: 32

約数和(自身を含む): 42925680

約数和(自身を除く): 21011710

約数列:

[1, 2, 5, 10, 13, 26, 65, 101, 130, 202, 505, 1010, 1313, 1669, 2626, 3338, 6565, 8345, 13130, 16690, 21697, 43394, 108485, 168569, 216970, 337138, 842845, 1685690, 2191397, 4382794, 10956985, 21913970]

約数ペア:

[(1, 21913970), (2, 10956985), (5, 4382794), (10, 2191397), (13, 1685690), (26, 842845), (65, 337138), (101, 216970), (130, 168569), (202, 108485), (505, 43394), (1010, 21697), (1313, 16690), (1669, 13130), (2626, 8345), (3338, 6565)]