205621760

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2591}}^1$

素因数の和:2645

約数の個数: 80

約数和(自身を含む): 509110272

約数和(自身を除く): 303488512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2480, 2560, 2591, 3968, 4960, 5182, 7936, 9920, 10364, 12955, 15872, 19840, 20728, 25910, 39680, 41456, 51820, 79360, 80321, 82912, 103640, 160642, 165824, 207280, 321284, 331648, 401605, 414560, 642568, 663296, 803210, 829120, 1285136, 1326592, 1606420, 1658240, 2570272, 3212840, 3316480, 5140544, 6425680, 6632960, 10281088, 12851360, 20562176, 25702720, 41124352, 51405440, 102810880, 205621760]

約数ペア:

[(1, 205621760), (2, 102810880), (4, 51405440), (5, 41124352), (8, 25702720), (10, 20562176), (16, 12851360), (20, 10281088), (31, 6632960), (32, 6425680), (40, 5140544), (62, 3316480), (64, 3212840), (80, 2570272), (124, 1658240), (128, 1606420), (155, 1326592), (160, 1285136), (248, 829120), (256, 803210), (310, 663296), (320, 642568), (496, 414560), (512, 401605), (620, 331648), (640, 321284), (992, 207280), (1240, 165824), (1280, 160642), (1984, 103640), (2480, 82912), (2560, 80321), (2591, 79360), (3968, 51820), (4960, 41456), (5182, 39680), (7936, 25910), (9920, 20728), (10364, 19840), (12955, 15872)]