2000785880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{521}}^1$

素因数の和:745

約数の個数: 128

約数和(自身を含む): 4931020800

約数和(自身を除く): 2930234920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 163, 190, 248, 310, 326, 380, 521, 589, 620, 652, 760, 815, 1042, 1178, 1240, 1304, 1630, 2084, 2356, 2605, 2945, 3097, 3260, 4168, 4712, 5053, 5210, 5890, 6194, 6520, 9899, 10106, 10420, 11780, 12388, 15485, 16151, 19798, 20212, 20840, 23560, 24776, 25265, 30970, 32302, 39596, 40424, 49495, 50530, 61940, 64604, 79192, 80755, 84923, 96007, 98990, 101060, 123880, 129208, 161510, 169846, 192014, 197980, 202120, 306869, 323020, 339692, 384028, 395960, 424615, 480035, 613738, 646040, 679384, 768056, 849230, 960070, 1227476, 1534345, 1613537, 1698460, 1920140, 2454952, 2632613, 3068690, 3227074, 3396920, 3840280, 5265226, 6137380, 6454148, 8067685, 10530452, 12274760, 12908296, 13163065, 16135370, 21060904, 26326130, 32270740, 50019647, 52652260, 64541480, 100039294, 105304520, 200078588, 250098235, 400157176, 500196470, 1000392940, 2000785880]

約数ペア:

[(1, 2000785880), (2, 1000392940), (4, 500196470), (5, 400157176), (8, 250098235), (10, 200078588), (19, 105304520), (20, 100039294), (31, 64541480), (38, 52652260), (40, 50019647), (62, 32270740), (76, 26326130), (95, 21060904), (124, 16135370), (152, 13163065), (155, 12908296), (163, 12274760), (190, 10530452), (248, 8067685), (310, 6454148), (326, 6137380), (380, 5265226), (521, 3840280), (589, 3396920), (620, 3227074), (652, 3068690), (760, 2632613), (815, 2454952), (1042, 1920140), (1178, 1698460), (1240, 1613537), (1304, 1534345), (1630, 1227476), (2084, 960070), (2356, 849230), (2605, 768056), (2945, 679384), (3097, 646040), (3260, 613738), (4168, 480035), (4712, 424615), (5053, 395960), (5210, 384028), (5890, 339692), (6194, 323020), (6520, 306869), (9899, 202120), (10106, 197980), (10420, 192014), (11780, 169846), (12388, 161510), (15485, 129208), (16151, 123880), (19798, 101060), (20212, 98990), (20840, 96007), (23560, 84923), (24776, 80755), (25265, 79192), (30970, 64604), (32302, 61940), (39596, 50530), (40424, 49495)]