21000866838

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{366853}}^1$

素因数の和:366941

約数の個数: 64

約数和(自身を含む): 50713896960

約数和(自身を除く): 29713030122

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 47, 58, 87, 94, 141, 174, 203, 282, 329, 406, 609, 658, 987, 1218, 1363, 1974, 2726, 4089, 8178, 9541, 19082, 28623, 57246, 366853, 733706, 1100559, 2201118, 2567971, 5135942, 7703913, 10638737, 15407826, 17242091, 21277474, 31916211, 34484182, 51726273, 63832422, 74471159, 103452546, 120694637, 148942318, 223413477, 241389274, 362083911, 446826954, 500020639, 724167822, 1000041278, 1500061917, 3000123834, 3500144473, 7000288946, 10500433419, 21000866838]

約数ペア:

[(1, 21000866838), (2, 10500433419), (3, 7000288946), (6, 3500144473), (7, 3000123834), (14, 1500061917), (21, 1000041278), (29, 724167822), (42, 500020639), (47, 446826954), (58, 362083911), (87, 241389274), (94, 223413477), (141, 148942318), (174, 120694637), (203, 103452546), (282, 74471159), (329, 63832422), (406, 51726273), (609, 34484182), (658, 31916211), (987, 21277474), (1218, 17242091), (1363, 15407826), (1974, 10638737), (2726, 7703913), (4089, 5135942), (8178, 2567971), (9541, 2201118), (19082, 1100559), (28623, 733706), (57246, 366853)]