21000852460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{587}}^1\times {\mathrm{607}}^1$

素因数の和:1631

約数の個数: 96

約数和(自身を含む): 50691207168

約数和(自身を除く): 29690354708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 587, 607, 842, 1174, 1214, 1684, 2105, 2348, 2428, 2935, 2947, 3035, 4109, 4210, 4249, 5870, 5894, 6070, 8218, 8420, 8498, 11740, 11788, 12140, 14735, 16436, 16996, 20545, 21245, 29470, 41090, 42490, 58940, 82180, 84980, 247127, 255547, 356309, 494254, 511094, 712618, 988508, 1022188, 1235635, 1277735, 1425236, 1729889, 1781545, 1788829, 2471270, 2494163, 2555470, 3459778, 3563090, 3577658, 4942540, 4988326, 5110940, 6919556, 7126180, 7155316, 8649445, 8944145, 9976652, 12470815, 17298890, 17888290, 24941630, 34597780, 35776580, 49883260, 150006089, 300012178, 600024356, 750030445, 1050042623, 1500060890, 2100085246, 3000121780, 4200170492, 5250213115, 10500426230, 21000852460]

約数ペア:

[(1, 21000852460), (2, 10500426230), (4, 5250213115), (5, 4200170492), (7, 3000121780), (10, 2100085246), (14, 1500060890), (20, 1050042623), (28, 750030445), (35, 600024356), (70, 300012178), (140, 150006089), (421, 49883260), (587, 35776580), (607, 34597780), (842, 24941630), (1174, 17888290), (1214, 17298890), (1684, 12470815), (2105, 9976652), (2348, 8944145), (2428, 8649445), (2935, 7155316), (2947, 7126180), (3035, 6919556), (4109, 5110940), (4210, 4988326), (4249, 4942540), (5870, 3577658), (5894, 3563090), (6070, 3459778), (8218, 2555470), (8420, 2494163), (8498, 2471270), (11740, 1788829), (11788, 1781545), (12140, 1729889), (14735, 1425236), (16436, 1277735), (16996, 1235635), (20545, 1022188), (21245, 988508), (29470, 712618), (41090, 511094), (42490, 494254), (58940, 356309), (82180, 255547), (84980, 247127)]