21211554

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{733}}^1$

素因数の和:811

約数の個数: 64

約数和(自身を含む): 53270784

約数和(自身を除く): 32059230

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 53, 78, 91, 106, 159, 182, 273, 318, 371, 546, 689, 733, 742, 1113, 1378, 1466, 2067, 2199, 2226, 4134, 4398, 4823, 5131, 9529, 9646, 10262, 14469, 15393, 19058, 28587, 28938, 30786, 38849, 57174, 66703, 77698, 116547, 133406, 200109, 233094, 271943, 400218, 505037, 543886, 815829, 1010074, 1515111, 1631658, 3030222, 3535259, 7070518, 10605777, 21211554]

約数ペア:

[(1, 21211554), (2, 10605777), (3, 7070518), (6, 3535259), (7, 3030222), (13, 1631658), (14, 1515111), (21, 1010074), (26, 815829), (39, 543886), (42, 505037), (53, 400218), (78, 271943), (91, 233094), (106, 200109), (159, 133406), (182, 116547), (273, 77698), (318, 66703), (371, 57174), (546, 38849), (689, 30786), (733, 28938), (742, 28587), (1113, 19058), (1378, 15393), (1466, 14469), (2067, 10262), (2199, 9646), (2226, 9529), (4134, 5131), (4398, 4823)]