20091512

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 47347200

約数和(自身を除く): 27255688

約数列:

[1, 2, 4, 7, 8, 14, 19, 23, 28, 38, 46, 56, 76, 92, 133, 152, 161, 184, 266, 322, 437, 532, 644, 821, 874, 1064, 1288, 1642, 1748, 3059, 3284, 3496, 5747, 6118, 6568, 11494, 12236, 15599, 18883, 22988, 24472, 31198, 37766, 45976, 62396, 75532, 109193, 124792, 132181, 151064, 218386, 264362, 358777, 436772, 528724, 717554, 873544, 1057448, 1435108, 2511439, 2870216, 5022878, 10045756, 20091512]

約数ペア:

[(1, 20091512), (2, 10045756), (4, 5022878), (7, 2870216), (8, 2511439), (14, 1435108), (19, 1057448), (23, 873544), (28, 717554), (38, 528724), (46, 436772), (56, 358777), (76, 264362), (92, 218386), (133, 151064), (152, 132181), (161, 124792), (184, 109193), (266, 75532), (322, 62396), (437, 45976), (532, 37766), (644, 31198), (821, 24472), (874, 22988), (1064, 18883), (1288, 15599), (1642, 12236), (1748, 11494), (3059, 6568), (3284, 6118), (3496, 5747)]