21495786

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:120

約数の個数: 96

約数和(自身を含む): 52176960

約数和(自身を除く): 30681174

約数列:

[1, 2, 3, 6, 13, 17, 26, 29, 34, 39, 43, 51, 58, 78, 86, 87, 102, 129, 169, 174, 221, 258, 338, 377, 442, 493, 507, 559, 663, 731, 754, 986, 1014, 1118, 1131, 1247, 1326, 1462, 1479, 1677, 2193, 2262, 2494, 2873, 2958, 3354, 3741, 4386, 4901, 5746, 6409, 7267, 7482, 8619, 9503, 9802, 12818, 14534, 14703, 16211, 17238, 19006, 19227, 21199, 21801, 28509, 29406, 32422, 38454, 42398, 43602, 48633, 57018, 63597, 83317, 97266, 123539, 127194, 166634, 210743, 247078, 249951, 275587, 370617, 421486, 499902, 551174, 632229, 741234, 826761, 1264458, 1653522, 3582631, 7165262, 10747893, 21495786]

約数ペア:

[(1, 21495786), (2, 10747893), (3, 7165262), (6, 3582631), (13, 1653522), (17, 1264458), (26, 826761), (29, 741234), (34, 632229), (39, 551174), (43, 499902), (51, 421486), (58, 370617), (78, 275587), (86, 249951), (87, 247078), (102, 210743), (129, 166634), (169, 127194), (174, 123539), (221, 97266), (258, 83317), (338, 63597), (377, 57018), (442, 48633), (493, 43602), (507, 42398), (559, 38454), (663, 32422), (731, 29406), (754, 28509), (986, 21801), (1014, 21199), (1118, 19227), (1131, 19006), (1247, 17238), (1326, 16211), (1462, 14703), (1479, 14534), (1677, 12818), (2193, 9802), (2262, 9503), (2494, 8619), (2873, 7482), (2958, 7267), (3354, 6409), (3741, 5746), (4386, 4901)]