21980196

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{87223}}^1$

素因数の和:87240

約数の個数: 36

約数和(自身を含む): 63499072

約数和(自身を除く): 41518876

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 87223, 174446, 261669, 348892, 523338, 610561, 785007, 1046676, 1221122, 1570014, 1831683, 2442244, 3140028, 3663366, 5495049, 7326732, 10990098, 21980196]

約数ペア:

[(1, 21980196), (2, 10990098), (3, 7326732), (4, 5495049), (6, 3663366), (7, 3140028), (9, 2442244), (12, 1831683), (14, 1570014), (18, 1221122), (21, 1046676), (28, 785007), (36, 610561), (42, 523338), (63, 348892), (84, 261669), (126, 174446), (252, 87223)]