20197945089

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:692

約数の個数: 144

約数和(自身を含む): 37004947200

約数和(自身を除く): 16807002111

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 63, 67, 79, 119, 147, 153, 201, 237, 357, 441, 469, 509, 553, 603, 711, 833, 1071, 1139, 1343, 1407, 1527, 1659, 2499, 3283, 3417, 3563, 3871, 4029, 4221, 4581, 4977, 5293, 7497, 7973, 8653, 9401, 9849, 10251, 10689, 11613, 12087, 15879, 23919, 24941, 25959, 28203, 29547, 32067, 34103, 34839, 37051, 40211, 47637, 55811, 60571, 65807, 71757, 74823, 77877, 84609, 89981, 102309, 111153, 120633, 167433, 181713, 197421, 224469, 238721, 259357, 269943, 281477, 306927, 333459, 361899, 423997, 502299, 545139, 579751, 592263, 629867, 683587, 716163, 778071, 809829, 844431, 1271991, 1671047, 1739253, 1889601, 1970339, 2050761, 2148489, 2334213, 2533293, 2694137, 3815973, 4058257, 4409069, 4785109, 5013141, 5217759, 5668803, 5911017, 6152283, 8082411, 12174771, 13227207, 14355327, 15039423, 17733051, 18858959, 24247233, 28407799, 33495763, 36524313, 39681621, 43065981, 45800329, 56576877, 85223397, 100487289, 132012713, 137400987, 169730631, 255670191, 301461867, 320602303, 396038139, 412202961, 961806909, 1188114417, 2244216121, 2885420727, 6732648363, 20197945089]

約数ペア:

[(1, 20197945089), (3, 6732648363), (7, 2885420727), (9, 2244216121), (17, 1188114417), (21, 961806909), (49, 412202961), (51, 396038139), (63, 320602303), (67, 301461867), (79, 255670191), (119, 169730631), (147, 137400987), (153, 132012713), (201, 100487289), (237, 85223397), (357, 56576877), (441, 45800329), (469, 43065981), (509, 39681621), (553, 36524313), (603, 33495763), (711, 28407799), (833, 24247233), (1071, 18858959), (1139, 17733051), (1343, 15039423), (1407, 14355327), (1527, 13227207), (1659, 12174771), (2499, 8082411), (3283, 6152283), (3417, 5911017), (3563, 5668803), (3871, 5217759), (4029, 5013141), (4221, 4785109), (4581, 4409069), (4977, 4058257), (5293, 3815973), (7497, 2694137), (7973, 2533293), (8653, 2334213), (9401, 2148489), (9849, 2050761), (10251, 1970339), (10689, 1889601), (11613, 1739253), (12087, 1671047), (15879, 1271991), (23919, 844431), (24941, 809829), (25959, 778071), (28203, 716163), (29547, 683587), (32067, 629867), (34103, 592263), (34839, 579751), (37051, 545139), (40211, 502299), (47637, 423997), (55811, 361899), (60571, 333459), (65807, 306927), (71757, 281477), (74823, 269943), (77877, 259357), (84609, 238721), (89981, 224469), (102309, 197421), (111153, 181713), (120633, 167433)]