21970476

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:639

約数の個数: 72

約数和(自身を含む): 61261200

約数和(自身を除く): 39290724

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 109, 132, 198, 218, 327, 396, 436, 509, 654, 981, 1018, 1199, 1308, 1527, 1962, 2036, 2398, 3054, 3597, 3924, 4581, 4796, 5599, 6108, 7194, 9162, 10791, 11198, 14388, 16797, 18324, 21582, 22396, 33594, 43164, 50391, 55481, 67188, 100782, 110962, 166443, 201564, 221924, 332886, 499329, 610291, 665772, 998658, 1220582, 1830873, 1997316, 2441164, 3661746, 5492619, 7323492, 10985238, 21970476]

約数ペア:

[(1, 21970476), (2, 10985238), (3, 7323492), (4, 5492619), (6, 3661746), (9, 2441164), (11, 1997316), (12, 1830873), (18, 1220582), (22, 998658), (33, 665772), (36, 610291), (44, 499329), (66, 332886), (99, 221924), (109, 201564), (132, 166443), (198, 110962), (218, 100782), (327, 67188), (396, 55481), (436, 50391), (509, 43164), (654, 33594), (981, 22396), (1018, 21582), (1199, 18324), (1308, 16797), (1527, 14388), (1962, 11198), (2036, 10791), (2398, 9162), (3054, 7194), (3597, 6108), (3924, 5599), (4581, 4796)]