213873920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12853}}^1$

素因数の和:12887

約数の個数: 72

約数和(自身を含む): 551745096

約数和(自身を除く): 337871176

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 12853, 16640, 25706, 51412, 64265, 102824, 128530, 167089, 205648, 257060, 334178, 411296, 514120, 668356, 822592, 835445, 1028240, 1336712, 1645184, 1670890, 2056480, 2673424, 3290368, 3341780, 4112960, 5346848, 6683560, 8225920, 10693696, 13367120, 16451840, 21387392, 26734240, 42774784, 53468480, 106936960, 213873920]

約数ペア:

[(1, 213873920), (2, 106936960), (4, 53468480), (5, 42774784), (8, 26734240), (10, 21387392), (13, 16451840), (16, 13367120), (20, 10693696), (26, 8225920), (32, 6683560), (40, 5346848), (52, 4112960), (64, 3341780), (65, 3290368), (80, 2673424), (104, 2056480), (128, 1670890), (130, 1645184), (160, 1336712), (208, 1028240), (256, 835445), (260, 822592), (320, 668356), (416, 514120), (520, 411296), (640, 334178), (832, 257060), (1040, 205648), (1280, 167089), (1664, 128530), (2080, 102824), (3328, 64265), (4160, 51412), (8320, 25706), (12853, 16640)]