21287772

素因数分解:

$2^2\times 3^5\times {\mathrm{11}}^2\times {\mathrm{181}}^1$

素因数の和:222

約数の個数: 108

約数和(自身を含む): 61676888

約数和(自身を除く): 40389116

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 27, 33, 36, 44, 54, 66, 81, 99, 108, 121, 132, 162, 181, 198, 242, 243, 297, 324, 362, 363, 396, 484, 486, 543, 594, 724, 726, 891, 972, 1086, 1089, 1188, 1452, 1629, 1782, 1991, 2172, 2178, 2673, 3258, 3267, 3564, 3982, 4356, 4887, 5346, 5973, 6516, 6534, 7964, 9774, 9801, 10692, 11946, 13068, 14661, 17919, 19548, 19602, 21901, 23892, 29322, 29403, 35838, 39204, 43802, 43983, 53757, 58644, 58806, 65703, 71676, 87604, 87966, 107514, 117612, 131406, 161271, 175932, 197109, 215028, 262812, 322542, 394218, 483813, 591327, 645084, 788436, 967626, 1182654, 1773981, 1935252, 2365308, 3547962, 5321943, 7095924, 10643886, 21287772]

約数ペア:

[(1, 21287772), (2, 10643886), (3, 7095924), (4, 5321943), (6, 3547962), (9, 2365308), (11, 1935252), (12, 1773981), (18, 1182654), (22, 967626), (27, 788436), (33, 645084), (36, 591327), (44, 483813), (54, 394218), (66, 322542), (81, 262812), (99, 215028), (108, 197109), (121, 175932), (132, 161271), (162, 131406), (181, 117612), (198, 107514), (242, 87966), (243, 87604), (297, 71676), (324, 65703), (362, 58806), (363, 58644), (396, 53757), (484, 43983), (486, 43802), (543, 39204), (594, 35838), (724, 29403), (726, 29322), (891, 23892), (972, 21901), (1086, 19602), (1089, 19548), (1188, 17919), (1452, 14661), (1629, 13068), (1782, 11946), (1991, 10692), (2172, 9801), (2178, 9774), (2673, 7964), (3258, 6534), (3267, 6516), (3564, 5973), (3982, 5346), (4356, 4887)]