326561720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{1151}}^1$

素因数の和:1376

約数の個数: 64

約数和(自身を含む): 757693440

約数和(自身を除く): 431131720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 173, 205, 328, 346, 410, 692, 820, 865, 1151, 1384, 1640, 1730, 2302, 3460, 4604, 5755, 6920, 7093, 9208, 11510, 14186, 23020, 28372, 35465, 46040, 47191, 56744, 70930, 94382, 141860, 188764, 199123, 235955, 283720, 377528, 398246, 471910, 796492, 943820, 995615, 1592984, 1887640, 1991230, 3982460, 7964920, 8164043, 16328086, 32656172, 40820215, 65312344, 81640430, 163280860, 326561720]

約数ペア:

[(1, 326561720), (2, 163280860), (4, 81640430), (5, 65312344), (8, 40820215), (10, 32656172), (20, 16328086), (40, 8164043), (41, 7964920), (82, 3982460), (164, 1991230), (173, 1887640), (205, 1592984), (328, 995615), (346, 943820), (410, 796492), (692, 471910), (820, 398246), (865, 377528), (1151, 283720), (1384, 235955), (1640, 199123), (1730, 188764), (2302, 141860), (3460, 94382), (4604, 70930), (5755, 56744), (6920, 47191), (7093, 46040), (9208, 35465), (11510, 28372), (14186, 23020)]