21631148

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 72

約数和(自身を含む): 49029120

約数和(自身を除く): 27397972

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 79, 98, 127, 154, 158, 196, 254, 308, 316, 508, 539, 553, 869, 889, 1078, 1106, 1397, 1738, 1778, 2156, 2212, 2794, 3476, 3556, 3871, 5588, 6083, 6223, 7742, 9779, 10033, 12166, 12446, 15484, 19558, 20066, 24332, 24892, 39116, 40132, 42581, 68453, 70231, 85162, 110363, 136906, 140462, 170324, 220726, 273812, 280924, 441452, 491617, 772541, 983234, 1545082, 1966468, 3090164, 5407787, 10815574, 21631148]

約数ペア:

[(1, 21631148), (2, 10815574), (4, 5407787), (7, 3090164), (11, 1966468), (14, 1545082), (22, 983234), (28, 772541), (44, 491617), (49, 441452), (77, 280924), (79, 273812), (98, 220726), (127, 170324), (154, 140462), (158, 136906), (196, 110363), (254, 85162), (308, 70231), (316, 68453), (508, 42581), (539, 40132), (553, 39116), (869, 24892), (889, 24332), (1078, 20066), (1106, 19558), (1397, 15484), (1738, 12446), (1778, 12166), (2156, 10033), (2212, 9779), (2794, 7742), (3476, 6223), (3556, 6083), (3871, 5588)]