21078684

素因数分解:

$2^2\times 3^3\times {\mathrm{11}}^2\times {\mathrm{1613}}^1$

素因数の和:1648

約数の個数: 72

約数和(自身を含む): 60105360

約数和(自身を除く): 39026676

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 99, 108, 121, 132, 198, 242, 297, 363, 396, 484, 594, 726, 1089, 1188, 1452, 1613, 2178, 3226, 3267, 4356, 4839, 6452, 6534, 9678, 13068, 14517, 17743, 19356, 29034, 35486, 43551, 53229, 58068, 70972, 87102, 106458, 159687, 174204, 195173, 212916, 319374, 390346, 479061, 585519, 638748, 780692, 958122, 1171038, 1756557, 1916244, 2342076, 3513114, 5269671, 7026228, 10539342, 21078684]

約数ペア:

[(1, 21078684), (2, 10539342), (3, 7026228), (4, 5269671), (6, 3513114), (9, 2342076), (11, 1916244), (12, 1756557), (18, 1171038), (22, 958122), (27, 780692), (33, 638748), (36, 585519), (44, 479061), (54, 390346), (66, 319374), (99, 212916), (108, 195173), (121, 174204), (132, 159687), (198, 106458), (242, 87102), (297, 70972), (363, 58068), (396, 53229), (484, 43551), (594, 35486), (726, 29034), (1089, 19356), (1188, 17743), (1452, 14517), (1613, 13068), (2178, 9678), (3226, 6534), (3267, 6452), (4356, 4839)]