21875868

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1847}}^1$

素因数の和:1911

約数の個数: 72

約数和(自身を含む): 64576512

約数和(自身を除く): 42700644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 63, 84, 94, 126, 141, 188, 252, 282, 329, 423, 564, 658, 846, 987, 1316, 1692, 1847, 1974, 2961, 3694, 3948, 5541, 5922, 7388, 11082, 11844, 12929, 16623, 22164, 25858, 33246, 38787, 51716, 66492, 77574, 86809, 116361, 155148, 173618, 232722, 260427, 347236, 465444, 520854, 607663, 781281, 1041708, 1215326, 1562562, 1822989, 2430652, 3125124, 3645978, 5468967, 7291956, 10937934, 21875868]

約数ペア:

[(1, 21875868), (2, 10937934), (3, 7291956), (4, 5468967), (6, 3645978), (7, 3125124), (9, 2430652), (12, 1822989), (14, 1562562), (18, 1215326), (21, 1041708), (28, 781281), (36, 607663), (42, 520854), (47, 465444), (63, 347236), (84, 260427), (94, 232722), (126, 173618), (141, 155148), (188, 116361), (252, 86809), (282, 77574), (329, 66492), (423, 51716), (564, 38787), (658, 33246), (846, 25858), (987, 22164), (1316, 16623), (1692, 12929), (1847, 11844), (1974, 11082), (2961, 7388), (3694, 5922), (3948, 5541)]