20121388287

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{317}}^1\times {\mathrm{919}}^1$

素因数の和:1293

約数の個数: 128

約数和(自身を含む): 37747261440

約数和(自身を除く): 17625873153

約数列:

[1, 3, 7, 11, 13, 21, 23, 33, 39, 69, 77, 91, 143, 161, 231, 253, 273, 299, 317, 429, 483, 759, 897, 919, 951, 1001, 1771, 2093, 2219, 2757, 3003, 3289, 3487, 4121, 5313, 6279, 6433, 6657, 7291, 9867, 10109, 10461, 11947, 12363, 19299, 21137, 21873, 23023, 24409, 28847, 30327, 35841, 45331, 51037, 63411, 69069, 70763, 73227, 80201, 83629, 86541, 94783, 131417, 135993, 147959, 153111, 212289, 232507, 240603, 250887, 274781, 284349, 291323, 317317, 394251, 443877, 561407, 663481, 697521, 824343, 873969, 919919, 951951, 1042613, 1627549, 1684221, 1923467, 1990443, 2039261, 2759757, 3022591, 3127839, 3204553, 3787199, 4882647, 5770401, 6117783, 6700429, 7298291, 9067773, 9613659, 11361597, 20101287, 21158137, 21894873, 22431871, 26510393, 41659189, 46903003, 63474411, 67295613, 73704719, 79531179, 87105577, 124977567, 140709009, 221114157, 261316731, 291614323, 515933033, 609739039, 874842969, 958161347, 1547799099, 1829217117, 2874484041, 6707129429, 20121388287]

約数ペア:

[(1, 20121388287), (3, 6707129429), (7, 2874484041), (11, 1829217117), (13, 1547799099), (21, 958161347), (23, 874842969), (33, 609739039), (39, 515933033), (69, 291614323), (77, 261316731), (91, 221114157), (143, 140709009), (161, 124977567), (231, 87105577), (253, 79531179), (273, 73704719), (299, 67295613), (317, 63474411), (429, 46903003), (483, 41659189), (759, 26510393), (897, 22431871), (919, 21894873), (951, 21158137), (1001, 20101287), (1771, 11361597), (2093, 9613659), (2219, 9067773), (2757, 7298291), (3003, 6700429), (3289, 6117783), (3487, 5770401), (4121, 4882647), (5313, 3787199), (6279, 3204553), (6433, 3127839), (6657, 3022591), (7291, 2759757), (9867, 2039261), (10109, 1990443), (10461, 1923467), (11947, 1684221), (12363, 1627549), (19299, 1042613), (21137, 951951), (21873, 919919), (23023, 873969), (24409, 824343), (28847, 697521), (30327, 663481), (35841, 561407), (45331, 443877), (51037, 394251), (63411, 317317), (69069, 291323), (70763, 284349), (73227, 274781), (80201, 250887), (83629, 240603), (86541, 232507), (94783, 212289), (131417, 153111), (135993, 147959)]