21115890

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:349

約数の個数: 80

約数和(自身を含む): 57499200

約数和(自身を除く): 36383310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 131, 135, 162, 199, 262, 270, 393, 398, 405, 597, 655, 786, 810, 995, 1179, 1194, 1310, 1791, 1965, 1990, 2358, 2985, 3537, 3582, 3930, 5373, 5895, 5970, 7074, 8955, 10611, 10746, 11790, 16119, 17685, 17910, 21222, 26069, 26865, 32238, 35370, 52138, 53055, 53730, 78207, 80595, 106110, 130345, 156414, 161190, 234621, 260690, 391035, 469242, 703863, 782070, 1173105, 1407726, 2111589, 2346210, 3519315, 4223178, 7038630, 10557945, 21115890]

約数ペア:

[(1, 21115890), (2, 10557945), (3, 7038630), (5, 4223178), (6, 3519315), (9, 2346210), (10, 2111589), (15, 1407726), (18, 1173105), (27, 782070), (30, 703863), (45, 469242), (54, 391035), (81, 260690), (90, 234621), (131, 161190), (135, 156414), (162, 130345), (199, 106110), (262, 80595), (270, 78207), (393, 53730), (398, 53055), (405, 52138), (597, 35370), (655, 32238), (786, 26865), (810, 26069), (995, 21222), (1179, 17910), (1194, 17685), (1310, 16119), (1791, 11790), (1965, 10746), (1990, 10611), (2358, 8955), (2985, 7074), (3537, 5970), (3582, 5895), (3930, 5373)]