20515755168

素因数分解:

$2^5\times 3^5\times {\mathrm{149}}^1\times {\mathrm{17707}}^1$

素因数の和:17881

約数の個数: 144

約数和(自身を含む): 60911978400

約数和(自身を除く): 40396223232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 81, 96, 108, 144, 149, 162, 216, 243, 288, 298, 324, 432, 447, 486, 596, 648, 864, 894, 972, 1192, 1296, 1341, 1788, 1944, 2384, 2592, 2682, 3576, 3888, 4023, 4768, 5364, 7152, 7776, 8046, 10728, 12069, 14304, 16092, 17707, 21456, 24138, 32184, 35414, 36207, 42912, 48276, 53121, 64368, 70828, 72414, 96552, 106242, 128736, 141656, 144828, 159363, 193104, 212484, 283312, 289656, 318726, 386208, 424968, 478089, 566624, 579312, 637452, 849936, 956178, 1158624, 1274904, 1434267, 1699872, 1912356, 2549808, 2638343, 2868534, 3824712, 4302801, 5099616, 5276686, 5737068, 7649424, 7915029, 8605602, 10553372, 11474136, 15298848, 15830058, 17211204, 21106744, 22948272, 23745087, 31660116, 34422408, 42213488, 45896544, 47490174, 63320232, 68844816, 71235261, 84426976, 94980348, 126640464, 137689632, 142470522, 189960696, 213705783, 253280928, 284941044, 379921392, 427411566, 569882088, 641117349, 759842784, 854823132, 1139764176, 1282234698, 1709646264, 2279528352, 2564469396, 3419292528, 5128938792, 6838585056, 10257877584, 20515755168]

約数ペア:

[(1, 20515755168), (2, 10257877584), (3, 6838585056), (4, 5128938792), (6, 3419292528), (8, 2564469396), (9, 2279528352), (12, 1709646264), (16, 1282234698), (18, 1139764176), (24, 854823132), (27, 759842784), (32, 641117349), (36, 569882088), (48, 427411566), (54, 379921392), (72, 284941044), (81, 253280928), (96, 213705783), (108, 189960696), (144, 142470522), (149, 137689632), (162, 126640464), (216, 94980348), (243, 84426976), (288, 71235261), (298, 68844816), (324, 63320232), (432, 47490174), (447, 45896544), (486, 42213488), (596, 34422408), (648, 31660116), (864, 23745087), (894, 22948272), (972, 21106744), (1192, 17211204), (1296, 15830058), (1341, 15298848), (1788, 11474136), (1944, 10553372), (2384, 8605602), (2592, 7915029), (2682, 7649424), (3576, 5737068), (3888, 5276686), (4023, 5099616), (4768, 4302801), (5364, 3824712), (7152, 2868534), (7776, 2638343), (8046, 2549808), (10728, 1912356), (12069, 1699872), (14304, 1434267), (16092, 1274904), (17707, 1158624), (21456, 956178), (24138, 849936), (32184, 637452), (35414, 579312), (36207, 566624), (42912, 478089), (48276, 424968), (53121, 386208), (64368, 318726), (70828, 289656), (72414, 283312), (96552, 212484), (106242, 193104), (128736, 159363), (141656, 144828)]