28691820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:309

約数の個数: 120

約数和(自身を含む): 91476000

約数和(自身を除く): 62784180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 89, 90, 108, 135, 162, 178, 180, 199, 267, 270, 324, 356, 398, 405, 445, 534, 540, 597, 796, 801, 810, 890, 995, 1068, 1194, 1335, 1602, 1620, 1780, 1791, 1990, 2388, 2403, 2670, 2985, 3204, 3582, 3980, 4005, 4806, 5340, 5373, 5970, 7164, 7209, 8010, 8955, 9612, 10746, 11940, 12015, 14418, 16020, 16119, 17711, 17910, 21492, 24030, 26865, 28836, 32238, 35422, 35820, 36045, 48060, 53133, 53730, 64476, 70844, 72090, 80595, 88555, 106266, 107460, 144180, 159399, 161190, 177110, 212532, 265665, 318798, 322380, 354220, 478197, 531330, 637596, 796995, 956394, 1062660, 1434591, 1593990, 1912788, 2390985, 2869182, 3187980, 4781970, 5738364, 7172955, 9563940, 14345910, 28691820]

約数ペア:

[(1, 28691820), (2, 14345910), (3, 9563940), (4, 7172955), (5, 5738364), (6, 4781970), (9, 3187980), (10, 2869182), (12, 2390985), (15, 1912788), (18, 1593990), (20, 1434591), (27, 1062660), (30, 956394), (36, 796995), (45, 637596), (54, 531330), (60, 478197), (81, 354220), (89, 322380), (90, 318798), (108, 265665), (135, 212532), (162, 177110), (178, 161190), (180, 159399), (199, 144180), (267, 107460), (270, 106266), (324, 88555), (356, 80595), (398, 72090), (405, 70844), (445, 64476), (534, 53730), (540, 53133), (597, 48060), (796, 36045), (801, 35820), (810, 35422), (890, 32238), (995, 28836), (1068, 26865), (1194, 24030), (1335, 21492), (1602, 17910), (1620, 17711), (1780, 16119), (1791, 16020), (1990, 14418), (2388, 12015), (2403, 11940), (2670, 10746), (2985, 9612), (3204, 8955), (3582, 8010), (3980, 7209), (4005, 7164), (4806, 5970), (5340, 5373)]