21000643180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{3313}}^1\times {\mathrm{28813}}^1$

素因数の和:32146

約数の個数: 48

約数和(自身を含む): 48126756384

約数和(自身を除く): 27126113204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 3313, 6626, 13252, 16565, 28813, 33130, 36443, 57626, 66260, 72886, 115252, 144065, 145772, 182215, 288130, 316943, 364430, 576260, 633886, 728860, 1267772, 1584715, 3169430, 6338860, 95457469, 190914938, 381829876, 477287345, 954574690, 1050032159, 1909149380, 2100064318, 4200128636, 5250160795, 10500321590, 21000643180]

約数ペア:

[(1, 21000643180), (2, 10500321590), (4, 5250160795), (5, 4200128636), (10, 2100064318), (11, 1909149380), (20, 1050032159), (22, 954574690), (44, 477287345), (55, 381829876), (110, 190914938), (220, 95457469), (3313, 6338860), (6626, 3169430), (13252, 1584715), (16565, 1267772), (28813, 728860), (33130, 633886), (36443, 576260), (57626, 364430), (66260, 316943), (72886, 288130), (115252, 182215), (144065, 145772)]