257851520

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{10889}}^1$

素因数の和:10945

約数の個数: 64

約数和(自身を含む): 633144600

約数和(自身を除く): 375293080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 1184, 1480, 2368, 2960, 4736, 5920, 10889, 11840, 21778, 23680, 43556, 54445, 87112, 108890, 174224, 217780, 348448, 402893, 435560, 696896, 805786, 871120, 1393792, 1611572, 1742240, 2014465, 3223144, 3484480, 4028930, 6446288, 6968960, 8057860, 12892576, 16115720, 25785152, 32231440, 51570304, 64462880, 128925760, 257851520]

約数ペア:

[(1, 257851520), (2, 128925760), (4, 64462880), (5, 51570304), (8, 32231440), (10, 25785152), (16, 16115720), (20, 12892576), (32, 8057860), (37, 6968960), (40, 6446288), (64, 4028930), (74, 3484480), (80, 3223144), (128, 2014465), (148, 1742240), (160, 1611572), (185, 1393792), (296, 871120), (320, 805786), (370, 696896), (592, 435560), (640, 402893), (740, 348448), (1184, 217780), (1480, 174224), (2368, 108890), (2960, 87112), (4736, 54445), (5920, 43556), (10889, 23680), (11840, 21778)]