21455688

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{827}}^1$

素因数の和:906

約数の個数: 64

約数和(自身を含む): 57231360

約数和(自身を除く): 35775672

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 47, 69, 92, 94, 138, 141, 184, 188, 276, 282, 376, 552, 564, 827, 1081, 1128, 1654, 2162, 2481, 3243, 3308, 4324, 4962, 6486, 6616, 8648, 9924, 12972, 19021, 19848, 25944, 38042, 38869, 57063, 76084, 77738, 114126, 116607, 152168, 155476, 228252, 233214, 310952, 456504, 466428, 893987, 932856, 1787974, 2681961, 3575948, 5363922, 7151896, 10727844, 21455688]

約数ペア:

[(1, 21455688), (2, 10727844), (3, 7151896), (4, 5363922), (6, 3575948), (8, 2681961), (12, 1787974), (23, 932856), (24, 893987), (46, 466428), (47, 456504), (69, 310952), (92, 233214), (94, 228252), (138, 155476), (141, 152168), (184, 116607), (188, 114126), (276, 77738), (282, 76084), (376, 57063), (552, 38869), (564, 38042), (827, 25944), (1081, 19848), (1128, 19021), (1654, 12972), (2162, 9924), (2481, 8648), (3243, 6616), (3308, 6486), (4324, 4962)]