21881578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14233622

約数列:

[1, 2, 19, 37, 38, 74, 79, 158, 197, 394, 703, 1406, 1501, 2923, 3002, 3743, 5846, 7289, 7486, 14578, 15563, 31126, 55537, 111074, 138491, 276982, 295697, 575831, 591394, 1151662, 10940789, 21881578]

約数ペア:

[(1, 21881578), (2, 10940789), (19, 1151662), (37, 591394), (38, 575831), (74, 295697), (79, 276982), (158, 138491), (197, 111074), (394, 55537), (703, 31126), (1406, 15563), (1501, 14578), (2923, 7486), (3002, 7289), (3743, 5846)]