209933440

素因数分解:

$2^7\times 5^1\times {\mathrm{331}}^1\times {\mathrm{991}}^1$

素因数の和:1341

約数の個数: 64

約数和(自身を含む): 503896320

約数和(自身を除く): 293962880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 331, 640, 662, 991, 1324, 1655, 1982, 2648, 3310, 3964, 4955, 5296, 6620, 7928, 9910, 10592, 13240, 15856, 19820, 21184, 26480, 31712, 39640, 42368, 52960, 63424, 79280, 105920, 126848, 158560, 211840, 317120, 328021, 634240, 656042, 1312084, 1640105, 2624168, 3280210, 5248336, 6560420, 10496672, 13120840, 20993344, 26241680, 41986688, 52483360, 104966720, 209933440]

約数ペア:

[(1, 209933440), (2, 104966720), (4, 52483360), (5, 41986688), (8, 26241680), (10, 20993344), (16, 13120840), (20, 10496672), (32, 6560420), (40, 5248336), (64, 3280210), (80, 2624168), (128, 1640105), (160, 1312084), (320, 656042), (331, 634240), (640, 328021), (662, 317120), (991, 211840), (1324, 158560), (1655, 126848), (1982, 105920), (2648, 79280), (3310, 63424), (3964, 52960), (4955, 42368), (5296, 39640), (6620, 31712), (7928, 26480), (9910, 21184), (10592, 19820), (13240, 15856)]