21235516

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 19890884

約数列:

[1, 2, 4, 17, 34, 59, 67, 68, 79, 118, 134, 158, 236, 268, 316, 1003, 1139, 1343, 2006, 2278, 2686, 3953, 4012, 4556, 4661, 5293, 5372, 7906, 9322, 10586, 15812, 18644, 21172, 67201, 79237, 89981, 134402, 158474, 179962, 268804, 312287, 316948, 359924, 624574, 1249148, 5308879, 10617758, 21235516]

約数ペア:

[(1, 21235516), (2, 10617758), (4, 5308879), (17, 1249148), (34, 624574), (59, 359924), (67, 316948), (68, 312287), (79, 268804), (118, 179962), (134, 158474), (158, 134402), (236, 89981), (268, 79237), (316, 67201), (1003, 21172), (1139, 18644), (1343, 15812), (2006, 10586), (2278, 9322), (2686, 7906), (3953, 5372), (4012, 5293), (4556, 4661)]