21078468

素因数分解:

$2^2\times 3^4\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1054

約数の個数: 60

約数和(自身を含む): 55983312

約数和(自身を除く): 34904844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 67, 81, 108, 134, 162, 201, 268, 324, 402, 603, 804, 971, 1206, 1809, 1942, 2412, 2913, 3618, 3884, 5427, 5826, 7236, 8739, 10854, 11652, 17478, 21708, 26217, 34956, 52434, 65057, 78651, 104868, 130114, 157302, 195171, 260228, 314604, 390342, 585513, 780684, 1171026, 1756539, 2342052, 3513078, 5269617, 7026156, 10539234, 21078468]

約数ペア:

[(1, 21078468), (2, 10539234), (3, 7026156), (4, 5269617), (6, 3513078), (9, 2342052), (12, 1756539), (18, 1171026), (27, 780684), (36, 585513), (54, 390342), (67, 314604), (81, 260228), (108, 195171), (134, 157302), (162, 130114), (201, 104868), (268, 78651), (324, 65057), (402, 52434), (603, 34956), (804, 26217), (971, 21708), (1206, 17478), (1809, 11652), (1942, 10854), (2412, 8739), (2913, 7236), (3618, 5826), (3884, 5427)]