2019689721

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{187477}}^1$

素因数の和:187515

約数の個数: 40

約数和(自身を含む): 3629574080

約数和(自身を除く): 1609884359

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 3591, 10773, 187477, 562431, 1312339, 1687293, 3562063, 3937017, 5061879, 10686189, 11811051, 15185637, 24934441, 32058567, 35433153, 74803323, 96175701, 106299459, 224409969, 288527103, 673229907, 2019689721]

約数ペア:

[(1, 2019689721), (3, 673229907), (7, 288527103), (9, 224409969), (19, 106299459), (21, 96175701), (27, 74803323), (57, 35433153), (63, 32058567), (81, 24934441), (133, 15185637), (171, 11811051), (189, 10686189), (399, 5061879), (513, 3937017), (567, 3562063), (1197, 1687293), (1539, 1312339), (3591, 562431), (10773, 187477)]