21000577640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{15727}}^1$

素因数の和:16015

約数の個数: 128

約数和(自身を含む): 57073766400

約数和(自身を除く): 36073188760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 251, 266, 280, 380, 502, 532, 665, 760, 1004, 1064, 1255, 1330, 1757, 2008, 2510, 2660, 3514, 4769, 5020, 5320, 7028, 8785, 9538, 10040, 14056, 15727, 17570, 19076, 23845, 31454, 33383, 35140, 38152, 47690, 62908, 66766, 70280, 78635, 95380, 110089, 125816, 133532, 157270, 166915, 190760, 220178, 267064, 298813, 314540, 333830, 440356, 550445, 597626, 629080, 667660, 880712, 1100890, 1195252, 1335320, 1494065, 2091691, 2201780, 2390504, 2988130, 3947477, 4183382, 4403560, 5976260, 7894954, 8366764, 10458455, 11952520, 15789908, 16733528, 19737385, 20916910, 27632339, 31579816, 39474770, 41833820, 55264678, 75002063, 78949540, 83667640, 110529356, 138161695, 150004126, 157899080, 221058712, 276323390, 300008252, 375010315, 525014441, 552646780, 600016504, 750020630, 1050028882, 1105293560, 1500041260, 2100057764, 2625072205, 3000082520, 4200115528, 5250144410, 10500288820, 21000577640]

約数ペア:

[(1, 21000577640), (2, 10500288820), (4, 5250144410), (5, 4200115528), (7, 3000082520), (8, 2625072205), (10, 2100057764), (14, 1500041260), (19, 1105293560), (20, 1050028882), (28, 750020630), (35, 600016504), (38, 552646780), (40, 525014441), (56, 375010315), (70, 300008252), (76, 276323390), (95, 221058712), (133, 157899080), (140, 150004126), (152, 138161695), (190, 110529356), (251, 83667640), (266, 78949540), (280, 75002063), (380, 55264678), (502, 41833820), (532, 39474770), (665, 31579816), (760, 27632339), (1004, 20916910), (1064, 19737385), (1255, 16733528), (1330, 15789908), (1757, 11952520), (2008, 10458455), (2510, 8366764), (2660, 7894954), (3514, 5976260), (4769, 4403560), (5020, 4183382), (5320, 3947477), (7028, 2988130), (8785, 2390504), (9538, 2201780), (10040, 2091691), (14056, 1494065), (15727, 1335320), (17570, 1195252), (19076, 1100890), (23845, 880712), (31454, 667660), (33383, 629080), (35140, 597626), (38152, 550445), (47690, 440356), (62908, 333830), (66766, 314540), (70280, 298813), (78635, 267064), (95380, 220178), (110089, 190760), (125816, 166915), (133532, 157270)]