778814720

素因数分解:

$2^8\times 5^1\times {\mathrm{29}}^1\times {\mathrm{20981}}^1$

素因数の和:21031

約数の個数: 72

約数和(自身を含む): 1929924360

約数和(自身を除く): 1151109640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 290, 320, 464, 580, 640, 928, 1160, 1280, 1856, 2320, 3712, 4640, 7424, 9280, 18560, 20981, 37120, 41962, 83924, 104905, 167848, 209810, 335696, 419620, 608449, 671392, 839240, 1216898, 1342784, 1678480, 2433796, 2685568, 3042245, 3356960, 4867592, 5371136, 6084490, 6713920, 9735184, 12168980, 13427840, 19470368, 24337960, 26855680, 38940736, 48675920, 77881472, 97351840, 155762944, 194703680, 389407360, 778814720]

約数ペア:

[(1, 778814720), (2, 389407360), (4, 194703680), (5, 155762944), (8, 97351840), (10, 77881472), (16, 48675920), (20, 38940736), (29, 26855680), (32, 24337960), (40, 19470368), (58, 13427840), (64, 12168980), (80, 9735184), (116, 6713920), (128, 6084490), (145, 5371136), (160, 4867592), (232, 3356960), (256, 3042245), (290, 2685568), (320, 2433796), (464, 1678480), (580, 1342784), (640, 1216898), (928, 839240), (1160, 671392), (1280, 608449), (1856, 419620), (2320, 335696), (3712, 209810), (4640, 167848), (7424, 104905), (9280, 83924), (18560, 41962), (20981, 37120)]