1999771020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{761}}^1\times {\mathrm{1123}}^1$

素因数の和:1912

約数の個数: 144

約数和(自身を含む): 6546994272

約数和(自身を除く): 4547223252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 761, 780, 1123, 1170, 1522, 2246, 2283, 2340, 3044, 3369, 3805, 4492, 4566, 5615, 6738, 6849, 7610, 9132, 9893, 10107, 11230, 11415, 13476, 13698, 14599, 15220, 16845, 19786, 20214, 22460, 22830, 27396, 29198, 29679, 33690, 34245, 39572, 40428, 43797, 45660, 49465, 50535, 58396, 59358, 67380, 68490, 72995, 87594, 89037, 98930, 101070, 118716, 131391, 136980, 145990, 148395, 175188, 178074, 197860, 202140, 218985, 262782, 291980, 296790, 356148, 437970, 445185, 525564, 593580, 656955, 854603, 875940, 890370, 1313910, 1709206, 1780740, 2563809, 2627820, 3418412, 4273015, 5127618, 7691427, 8546030, 10255236, 11109839, 12819045, 15382854, 17092060, 22219678, 25638090, 30765708, 33329517, 38457135, 44439356, 51276180, 55549195, 66659034, 76914270, 99988551, 111098390, 133318068, 153828540, 166647585, 199977102, 222196780, 333295170, 399954204, 499942755, 666590340, 999885510, 1999771020]

約数ペア:

[(1, 1999771020), (2, 999885510), (3, 666590340), (4, 499942755), (5, 399954204), (6, 333295170), (9, 222196780), (10, 199977102), (12, 166647585), (13, 153828540), (15, 133318068), (18, 111098390), (20, 99988551), (26, 76914270), (30, 66659034), (36, 55549195), (39, 51276180), (45, 44439356), (52, 38457135), (60, 33329517), (65, 30765708), (78, 25638090), (90, 22219678), (117, 17092060), (130, 15382854), (156, 12819045), (180, 11109839), (195, 10255236), (234, 8546030), (260, 7691427), (390, 5127618), (468, 4273015), (585, 3418412), (761, 2627820), (780, 2563809), (1123, 1780740), (1170, 1709206), (1522, 1313910), (2246, 890370), (2283, 875940), (2340, 854603), (3044, 656955), (3369, 593580), (3805, 525564), (4492, 445185), (4566, 437970), (5615, 356148), (6738, 296790), (6849, 291980), (7610, 262782), (9132, 218985), (9893, 202140), (10107, 197860), (11230, 178074), (11415, 175188), (13476, 148395), (13698, 145990), (14599, 136980), (15220, 131391), (16845, 118716), (19786, 101070), (20214, 98930), (22460, 89037), (22830, 87594), (27396, 72995), (29198, 68490), (29679, 67380), (33690, 59358), (34245, 58396), (39572, 50535), (40428, 49465), (43797, 45660)]