21279492

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1109}}^1$

素因数の和:1173

約数の個数: 72

約数和(自身を含む): 59393880

約数和(自身を除く): 38114388

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 41, 52, 78, 82, 117, 123, 156, 164, 234, 246, 369, 468, 492, 533, 738, 1066, 1109, 1476, 1599, 2132, 2218, 3198, 3327, 4436, 4797, 6396, 6654, 9594, 9981, 13308, 14417, 19188, 19962, 28834, 39924, 43251, 45469, 57668, 86502, 90938, 129753, 136407, 173004, 181876, 259506, 272814, 409221, 519012, 545628, 591097, 818442, 1182194, 1636884, 1773291, 2364388, 3546582, 5319873, 7093164, 10639746, 21279492]

約数ペア:

[(1, 21279492), (2, 10639746), (3, 7093164), (4, 5319873), (6, 3546582), (9, 2364388), (12, 1773291), (13, 1636884), (18, 1182194), (26, 818442), (36, 591097), (39, 545628), (41, 519012), (52, 409221), (78, 272814), (82, 259506), (117, 181876), (123, 173004), (156, 136407), (164, 129753), (234, 90938), (246, 86502), (369, 57668), (468, 45469), (492, 43251), (533, 39924), (738, 28834), (1066, 19962), (1109, 19188), (1476, 14417), (1599, 13308), (2132, 9981), (2218, 9594), (3198, 6654), (3327, 6396), (4436, 4797)]