21367528

素因数分解:

$2^3\times 7^3\times {\mathrm{13}}^1\times {\mathrm{599}}^1$

素因数の和:639

約数の個数: 64

約数和(自身を含む): 50400000

約数和(自身を除く): 29032472

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 343, 364, 392, 599, 637, 686, 728, 1198, 1274, 1372, 2396, 2548, 2744, 4193, 4459, 4792, 5096, 7787, 8386, 8918, 15574, 16772, 17836, 29351, 31148, 33544, 35672, 54509, 58702, 62296, 109018, 117404, 205457, 218036, 234808, 381563, 410914, 436072, 763126, 821828, 1526252, 1643656, 2670941, 3052504, 5341882, 10683764, 21367528]

約数ペア:

[(1, 21367528), (2, 10683764), (4, 5341882), (7, 3052504), (8, 2670941), (13, 1643656), (14, 1526252), (26, 821828), (28, 763126), (49, 436072), (52, 410914), (56, 381563), (91, 234808), (98, 218036), (104, 205457), (182, 117404), (196, 109018), (343, 62296), (364, 58702), (392, 54509), (599, 35672), (637, 33544), (686, 31148), (728, 29351), (1198, 17836), (1274, 16772), (1372, 15574), (2396, 8918), (2548, 8386), (2744, 7787), (4193, 5096), (4459, 4792)]