20005974

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:115

約数の個数: 128

約数和(自身を含む): 52531200

約数和(自身を除く): 32525226

約数列:

[1, 2, 3, 6, 9, 17, 18, 19, 27, 31, 34, 37, 38, 51, 54, 57, 62, 74, 93, 102, 111, 114, 153, 171, 186, 222, 279, 306, 323, 333, 342, 459, 513, 527, 558, 589, 629, 646, 666, 703, 837, 918, 969, 999, 1026, 1054, 1147, 1178, 1258, 1406, 1581, 1674, 1767, 1887, 1938, 1998, 2109, 2294, 2907, 3162, 3441, 3534, 3774, 4218, 4743, 5301, 5661, 5814, 6327, 6882, 8721, 9486, 10013, 10323, 10602, 11322, 11951, 12654, 14229, 15903, 16983, 17442, 18981, 19499, 20026, 20646, 21793, 23902, 28458, 30039, 30969, 31806, 33966, 35853, 37962, 38998, 43586, 58497, 60078, 61938, 65379, 71706, 90117, 107559, 116994, 130758, 175491, 180234, 196137, 215118, 270351, 322677, 350982, 370481, 392274, 526473, 540702, 588411, 645354, 740962, 1052946, 1111443, 1176822, 2222886, 3334329, 6668658, 10002987, 20005974]

約数ペア:

[(1, 20005974), (2, 10002987), (3, 6668658), (6, 3334329), (9, 2222886), (17, 1176822), (18, 1111443), (19, 1052946), (27, 740962), (31, 645354), (34, 588411), (37, 540702), (38, 526473), (51, 392274), (54, 370481), (57, 350982), (62, 322677), (74, 270351), (93, 215118), (102, 196137), (111, 180234), (114, 175491), (153, 130758), (171, 116994), (186, 107559), (222, 90117), (279, 71706), (306, 65379), (323, 61938), (333, 60078), (342, 58497), (459, 43586), (513, 38998), (527, 37962), (558, 35853), (589, 33966), (629, 31806), (646, 30969), (666, 30039), (703, 28458), (837, 23902), (918, 21793), (969, 20646), (999, 20026), (1026, 19499), (1054, 18981), (1147, 17442), (1178, 16983), (1258, 15903), (1406, 14229), (1581, 12654), (1674, 11951), (1767, 11322), (1887, 10602), (1938, 10323), (1998, 10013), (2109, 9486), (2294, 8721), (2907, 6882), (3162, 6327), (3441, 5814), (3534, 5661), (3774, 5301), (4218, 4743)]