21019986

素因数分解:

$2^1\times 3^6\times {\mathrm{13}}^1\times {\mathrm{1109}}^1$

素因数の和:1142

約数の個数: 56

約数和(自身を含む): 50955660

約数和(自身を除く): 29935674

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 81, 117, 162, 234, 243, 351, 486, 702, 729, 1053, 1109, 1458, 2106, 2218, 3159, 3327, 6318, 6654, 9477, 9981, 14417, 18954, 19962, 28834, 29943, 43251, 59886, 86502, 89829, 129753, 179658, 259506, 269487, 389259, 538974, 778518, 808461, 1167777, 1616922, 2335554, 3503331, 7006662, 10509993, 21019986]

約数ペア:

[(1, 21019986), (2, 10509993), (3, 7006662), (6, 3503331), (9, 2335554), (13, 1616922), (18, 1167777), (26, 808461), (27, 778518), (39, 538974), (54, 389259), (78, 269487), (81, 259506), (117, 179658), (162, 129753), (234, 89829), (243, 86502), (351, 59886), (486, 43251), (702, 29943), (729, 28834), (1053, 19962), (1109, 18954), (1458, 14417), (2106, 9981), (2218, 9477), (3159, 6654), (3327, 6318)]