21197996

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 41583360

約数和(自身を除く): 20385364

約数列:

[1, 2, 4, 19, 23, 38, 46, 67, 76, 92, 134, 181, 268, 362, 437, 724, 874, 1273, 1541, 1748, 2546, 3082, 3439, 4163, 5092, 6164, 6878, 8326, 12127, 13756, 16652, 24254, 29279, 48508, 58558, 79097, 117116, 158194, 230413, 278921, 316388, 460826, 557842, 921652, 1115684, 5299499, 10598998, 21197996]

約数ペア:

[(1, 21197996), (2, 10598998), (4, 5299499), (19, 1115684), (23, 921652), (38, 557842), (46, 460826), (67, 316388), (76, 278921), (92, 230413), (134, 158194), (181, 117116), (268, 79097), (362, 58558), (437, 48508), (724, 29279), (874, 24254), (1273, 16652), (1541, 13756), (1748, 12127), (2546, 8326), (3082, 6878), (3439, 6164), (4163, 5092)]