400208640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8017}}^1$

素因数の和:8054

約数の個数: 144

約数和(自身を含む): 1376658528

約数和(自身を除く): 976449888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 768, 780, 832, 960, 1040, 1248, 1280, 1560, 1664, 1920, 2080, 2496, 3120, 3328, 3840, 4160, 4992, 6240, 8017, 8320, 9984, 12480, 16034, 16640, 24051, 24960, 32068, 40085, 48102, 49920, 64136, 80170, 96204, 104221, 120255, 128272, 160340, 192408, 208442, 240510, 256544, 312663, 320680, 384816, 416884, 481020, 513088, 521105, 625326, 641360, 769632, 833768, 962040, 1026176, 1042210, 1250652, 1282720, 1539264, 1563315, 1667536, 1924080, 2052352, 2084420, 2501304, 2565440, 3078528, 3126630, 3335072, 3848160, 4168840, 5002608, 5130880, 6157056, 6253260, 6670144, 7696320, 8337680, 10005216, 10261760, 12506520, 13340288, 15392640, 16675360, 20010432, 25013040, 26680576, 30785280, 33350720, 40020864, 50026080, 66701440, 80041728, 100052160, 133402880, 200104320, 400208640]

約数ペア:

[(1, 400208640), (2, 200104320), (3, 133402880), (4, 100052160), (5, 80041728), (6, 66701440), (8, 50026080), (10, 40020864), (12, 33350720), (13, 30785280), (15, 26680576), (16, 25013040), (20, 20010432), (24, 16675360), (26, 15392640), (30, 13340288), (32, 12506520), (39, 10261760), (40, 10005216), (48, 8337680), (52, 7696320), (60, 6670144), (64, 6253260), (65, 6157056), (78, 5130880), (80, 5002608), (96, 4168840), (104, 3848160), (120, 3335072), (128, 3126630), (130, 3078528), (156, 2565440), (160, 2501304), (192, 2084420), (195, 2052352), (208, 1924080), (240, 1667536), (256, 1563315), (260, 1539264), (312, 1282720), (320, 1250652), (384, 1042210), (390, 1026176), (416, 962040), (480, 833768), (520, 769632), (624, 641360), (640, 625326), (768, 521105), (780, 513088), (832, 481020), (960, 416884), (1040, 384816), (1248, 320680), (1280, 312663), (1560, 256544), (1664, 240510), (1920, 208442), (2080, 192408), (2496, 160340), (3120, 128272), (3328, 120255), (3840, 104221), (4160, 96204), (4992, 80170), (6240, 64136), (8017, 49920), (8320, 48102), (9984, 40085), (12480, 32068), (16034, 24960), (16640, 24051)]