644760

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{199}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 2178000

約数和(自身を除く): 1533240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 199, 216, 270, 324, 360, 398, 405, 540, 597, 648, 796, 810, 995, 1080, 1194, 1592, 1620, 1791, 1990, 2388, 2985, 3240, 3582, 3980, 4776, 5373, 5970, 7164, 7960, 8955, 10746, 11940, 14328, 16119, 17910, 21492, 23880, 26865, 32238, 35820, 42984, 53730, 64476, 71640, 80595, 107460, 128952, 161190, 214920, 322380, 644760]

約数ペア:

[(1, 644760), (2, 322380), (3, 214920), (4, 161190), (5, 128952), (6, 107460), (8, 80595), (9, 71640), (10, 64476), (12, 53730), (15, 42984), (18, 35820), (20, 32238), (24, 26865), (27, 23880), (30, 21492), (36, 17910), (40, 16119), (45, 14328), (54, 11940), (60, 10746), (72, 8955), (81, 7960), (90, 7164), (108, 5970), (120, 5373), (135, 4776), (162, 3980), (180, 3582), (199, 3240), (216, 2985), (270, 2388), (324, 1990), (360, 1791), (398, 1620), (405, 1592), (540, 1194), (597, 1080), (648, 995), (796, 810)]