21132240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{461}}^1$

素因数の和:668

約数の個数: 80

約数和(自身を含む): 65995776

約数和(自身を除く): 44863536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 191, 240, 382, 461, 573, 764, 922, 955, 1146, 1383, 1528, 1844, 1910, 2292, 2305, 2766, 2865, 3056, 3688, 3820, 4584, 4610, 5532, 5730, 6915, 7376, 7640, 9168, 9220, 11064, 11460, 13830, 15280, 18440, 22128, 22920, 27660, 36880, 45840, 55320, 88051, 110640, 176102, 264153, 352204, 440255, 528306, 704408, 880510, 1056612, 1320765, 1408816, 1761020, 2113224, 2641530, 3522040, 4226448, 5283060, 7044080, 10566120, 21132240]

約数ペア:

[(1, 21132240), (2, 10566120), (3, 7044080), (4, 5283060), (5, 4226448), (6, 3522040), (8, 2641530), (10, 2113224), (12, 1761020), (15, 1408816), (16, 1320765), (20, 1056612), (24, 880510), (30, 704408), (40, 528306), (48, 440255), (60, 352204), (80, 264153), (120, 176102), (191, 110640), (240, 88051), (382, 55320), (461, 45840), (573, 36880), (764, 27660), (922, 22920), (955, 22128), (1146, 18440), (1383, 15280), (1528, 13830), (1844, 11460), (1910, 11064), (2292, 9220), (2305, 9168), (2766, 7640), (2865, 7376), (3056, 6915), (3688, 5730), (3820, 5532), (4584, 4610)]