20523160

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:345

約数の個数: 96

約数和(自身を含む): 55362960

約数和(自身を除く): 34839800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 49, 56, 70, 74, 98, 140, 148, 185, 196, 245, 259, 280, 283, 296, 370, 392, 490, 518, 566, 740, 980, 1036, 1132, 1295, 1415, 1480, 1813, 1960, 1981, 2072, 2264, 2590, 2830, 3626, 3962, 5180, 5660, 7252, 7924, 9065, 9905, 10360, 10471, 11320, 13867, 14504, 15848, 18130, 19810, 20942, 27734, 36260, 39620, 41884, 52355, 55468, 69335, 72520, 73297, 79240, 83768, 104710, 110936, 138670, 146594, 209420, 277340, 293188, 366485, 418840, 513079, 554680, 586376, 732970, 1026158, 1465940, 2052316, 2565395, 2931880, 4104632, 5130790, 10261580, 20523160]

約数ペア:

[(1, 20523160), (2, 10261580), (4, 5130790), (5, 4104632), (7, 2931880), (8, 2565395), (10, 2052316), (14, 1465940), (20, 1026158), (28, 732970), (35, 586376), (37, 554680), (40, 513079), (49, 418840), (56, 366485), (70, 293188), (74, 277340), (98, 209420), (140, 146594), (148, 138670), (185, 110936), (196, 104710), (245, 83768), (259, 79240), (280, 73297), (283, 72520), (296, 69335), (370, 55468), (392, 52355), (490, 41884), (518, 39620), (566, 36260), (740, 27734), (980, 20942), (1036, 19810), (1132, 18130), (1295, 15848), (1415, 14504), (1480, 13867), (1813, 11320), (1960, 10471), (1981, 10360), (2072, 9905), (2264, 9065), (2590, 7924), (2830, 7252), (3626, 5660), (3962, 5180)]