20634880

素因数分解:

$2^8\times 5^1\times 7^3\times {\mathrm{47}}^1$

素因数の和:89

約数の個数: 144

約数和(自身を含む): 58867200

約数和(自身を除く): 38232320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 47, 49, 56, 64, 70, 80, 94, 98, 112, 128, 140, 160, 188, 196, 224, 235, 245, 256, 280, 320, 329, 343, 376, 392, 448, 470, 490, 560, 640, 658, 686, 752, 784, 896, 940, 980, 1120, 1280, 1316, 1372, 1504, 1568, 1645, 1715, 1792, 1880, 1960, 2240, 2303, 2632, 2744, 3008, 3136, 3290, 3430, 3760, 3920, 4480, 4606, 5264, 5488, 6016, 6272, 6580, 6860, 7520, 7840, 8960, 9212, 10528, 10976, 11515, 12032, 12544, 13160, 13720, 15040, 15680, 16121, 18424, 21056, 21952, 23030, 26320, 27440, 30080, 31360, 32242, 36848, 42112, 43904, 46060, 52640, 54880, 60160, 62720, 64484, 73696, 80605, 84224, 87808, 92120, 105280, 109760, 128968, 147392, 161210, 184240, 210560, 219520, 257936, 294784, 322420, 368480, 421120, 439040, 515872, 589568, 644840, 736960, 1031744, 1289680, 1473920, 2063488, 2579360, 2947840, 4126976, 5158720, 10317440, 20634880]

約数ペア:

[(1, 20634880), (2, 10317440), (4, 5158720), (5, 4126976), (7, 2947840), (8, 2579360), (10, 2063488), (14, 1473920), (16, 1289680), (20, 1031744), (28, 736960), (32, 644840), (35, 589568), (40, 515872), (47, 439040), (49, 421120), (56, 368480), (64, 322420), (70, 294784), (80, 257936), (94, 219520), (98, 210560), (112, 184240), (128, 161210), (140, 147392), (160, 128968), (188, 109760), (196, 105280), (224, 92120), (235, 87808), (245, 84224), (256, 80605), (280, 73696), (320, 64484), (329, 62720), (343, 60160), (376, 54880), (392, 52640), (448, 46060), (470, 43904), (490, 42112), (560, 36848), (640, 32242), (658, 31360), (686, 30080), (752, 27440), (784, 26320), (896, 23030), (940, 21952), (980, 21056), (1120, 18424), (1280, 16121), (1316, 15680), (1372, 15040), (1504, 13720), (1568, 13160), (1645, 12544), (1715, 12032), (1792, 11515), (1880, 10976), (1960, 10528), (2240, 9212), (2303, 8960), (2632, 7840), (2744, 7520), (3008, 6860), (3136, 6580), (3290, 6272), (3430, 6016), (3760, 5488), (3920, 5264), (4480, 4606)]