21972874

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:164

約数の個数: 72

約数和(自身を含む): 45031140

約数和(自身を除く): 23058266

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 49, 77, 98, 109, 119, 121, 154, 187, 218, 238, 242, 374, 539, 763, 833, 847, 1078, 1199, 1309, 1526, 1666, 1694, 1853, 2057, 2398, 2618, 3706, 4114, 5341, 5929, 8393, 9163, 10682, 11858, 12971, 13189, 14399, 16786, 18326, 20383, 25942, 26378, 28798, 40766, 58751, 90797, 92323, 100793, 117502, 142681, 181594, 184646, 201586, 224213, 285362, 448426, 646261, 998767, 1292522, 1569491, 1997534, 3138982, 10986437, 21972874]

約数ペア:

[(1, 21972874), (2, 10986437), (7, 3138982), (11, 1997534), (14, 1569491), (17, 1292522), (22, 998767), (34, 646261), (49, 448426), (77, 285362), (98, 224213), (109, 201586), (119, 184646), (121, 181594), (154, 142681), (187, 117502), (218, 100793), (238, 92323), (242, 90797), (374, 58751), (539, 40766), (763, 28798), (833, 26378), (847, 25942), (1078, 20383), (1199, 18326), (1309, 16786), (1526, 14399), (1666, 13189), (1694, 12971), (1853, 11858), (2057, 10682), (2398, 9163), (2618, 8393), (3706, 5929), (4114, 5341)]