256921000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{17}}^2\times {\mathrm{127}}^1$

素因数の和:189

約数の個数: 192

約数和(自身を含む): 735621120

約数和(自身を除く): 478700120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 25, 28, 34, 35, 40, 50, 56, 68, 70, 85, 100, 119, 125, 127, 136, 140, 170, 175, 200, 238, 250, 254, 280, 289, 340, 350, 425, 476, 500, 508, 578, 595, 635, 680, 700, 850, 875, 889, 952, 1000, 1016, 1156, 1190, 1270, 1400, 1445, 1700, 1750, 1778, 2023, 2125, 2159, 2312, 2380, 2540, 2890, 2975, 3175, 3400, 3500, 3556, 4046, 4250, 4318, 4445, 4760, 5080, 5780, 5950, 6350, 7000, 7112, 7225, 8092, 8500, 8636, 8890, 10115, 10795, 11560, 11900, 12700, 14450, 14875, 15113, 15875, 16184, 17000, 17272, 17780, 20230, 21590, 22225, 23800, 25400, 28900, 29750, 30226, 31750, 35560, 36125, 36703, 40460, 43180, 44450, 50575, 53975, 57800, 59500, 60452, 63500, 72250, 73406, 75565, 80920, 86360, 88900, 101150, 107950, 111125, 119000, 120904, 127000, 144500, 146812, 151130, 177800, 183515, 202300, 215900, 222250, 252875, 256921, 269875, 289000, 293624, 302260, 367030, 377825, 404600, 431800, 444500, 505750, 513842, 539750, 604520, 734060, 755650, 889000, 917575, 1011500, 1027684, 1079500, 1284605, 1468120, 1511300, 1835150, 1889125, 2023000, 2055368, 2159000, 2569210, 3022600, 3670300, 3778250, 4587875, 5138420, 6423025, 7340600, 7556500, 9175750, 10276840, 12846050, 15113000, 18351500, 25692100, 32115125, 36703000, 51384200, 64230250, 128460500, 256921000]

約数ペア:

[(1, 256921000), (2, 128460500), (4, 64230250), (5, 51384200), (7, 36703000), (8, 32115125), (10, 25692100), (14, 18351500), (17, 15113000), (20, 12846050), (25, 10276840), (28, 9175750), (34, 7556500), (35, 7340600), (40, 6423025), (50, 5138420), (56, 4587875), (68, 3778250), (70, 3670300), (85, 3022600), (100, 2569210), (119, 2159000), (125, 2055368), (127, 2023000), (136, 1889125), (140, 1835150), (170, 1511300), (175, 1468120), (200, 1284605), (238, 1079500), (250, 1027684), (254, 1011500), (280, 917575), (289, 889000), (340, 755650), (350, 734060), (425, 604520), (476, 539750), (500, 513842), (508, 505750), (578, 444500), (595, 431800), (635, 404600), (680, 377825), (700, 367030), (850, 302260), (875, 293624), (889, 289000), (952, 269875), (1000, 256921), (1016, 252875), (1156, 222250), (1190, 215900), (1270, 202300), (1400, 183515), (1445, 177800), (1700, 151130), (1750, 146812), (1778, 144500), (2023, 127000), (2125, 120904), (2159, 119000), (2312, 111125), (2380, 107950), (2540, 101150), (2890, 88900), (2975, 86360), (3175, 80920), (3400, 75565), (3500, 73406), (3556, 72250), (4046, 63500), (4250, 60452), (4318, 59500), (4445, 57800), (4760, 53975), (5080, 50575), (5780, 44450), (5950, 43180), (6350, 40460), (7000, 36703), (7112, 36125), (7225, 35560), (8092, 31750), (8500, 30226), (8636, 29750), (8890, 28900), (10115, 25400), (10795, 23800), (11560, 22225), (11900, 21590), (12700, 20230), (14450, 17780), (14875, 17272), (15113, 17000), (15875, 16184)]