20998068

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 144

約数和(自身を含む): 63814464

約数和(自身を除く): 42816396

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 41, 42, 49, 52, 67, 78, 82, 84, 91, 98, 123, 134, 147, 156, 164, 182, 196, 201, 246, 268, 273, 287, 294, 364, 402, 469, 492, 533, 546, 574, 588, 637, 804, 861, 871, 938, 1066, 1092, 1148, 1274, 1407, 1599, 1722, 1742, 1876, 1911, 2009, 2132, 2548, 2613, 2747, 2814, 3198, 3283, 3444, 3484, 3731, 3822, 4018, 5226, 5494, 5628, 6027, 6097, 6396, 6566, 7462, 7644, 8036, 8241, 9849, 10452, 10988, 11193, 12054, 12194, 13132, 14924, 16482, 18291, 19229, 19698, 22386, 24108, 24388, 26117, 32964, 35711, 36582, 38458, 39396, 42679, 44772, 52234, 57687, 71422, 73164, 76916, 78351, 85358, 104468, 107133, 115374, 128037, 134603, 142844, 156702, 170716, 214266, 230748, 249977, 256074, 269206, 313404, 403809, 428532, 499954, 512148, 538412, 749931, 807618, 999908, 1499862, 1615236, 1749839, 2999724, 3499678, 5249517, 6999356, 10499034, 20998068]

約数ペア:

[(1, 20998068), (2, 10499034), (3, 6999356), (4, 5249517), (6, 3499678), (7, 2999724), (12, 1749839), (13, 1615236), (14, 1499862), (21, 999908), (26, 807618), (28, 749931), (39, 538412), (41, 512148), (42, 499954), (49, 428532), (52, 403809), (67, 313404), (78, 269206), (82, 256074), (84, 249977), (91, 230748), (98, 214266), (123, 170716), (134, 156702), (147, 142844), (156, 134603), (164, 128037), (182, 115374), (196, 107133), (201, 104468), (246, 85358), (268, 78351), (273, 76916), (287, 73164), (294, 71422), (364, 57687), (402, 52234), (469, 44772), (492, 42679), (533, 39396), (546, 38458), (574, 36582), (588, 35711), (637, 32964), (804, 26117), (861, 24388), (871, 24108), (938, 22386), (1066, 19698), (1092, 19229), (1148, 18291), (1274, 16482), (1407, 14924), (1599, 13132), (1722, 12194), (1742, 12054), (1876, 11193), (1911, 10988), (2009, 10452), (2132, 9849), (2548, 8241), (2613, 8036), (2747, 7644), (2814, 7462), (3198, 6566), (3283, 6396), (3444, 6097), (3484, 6027), (3731, 5628), (3822, 5494), (4018, 5226)]