19421775

素因数分解:

$3^5\times 5^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 37914240

約数和(自身を除く): 18492465

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 135, 139, 207, 225, 243, 345, 405, 417, 575, 621, 675, 695, 1035, 1215, 1251, 1725, 1863, 2025, 2085, 3105, 3197, 3475, 3753, 5175, 5589, 6075, 6255, 9315, 9591, 10425, 11259, 15525, 15985, 18765, 27945, 28773, 31275, 33777, 46575, 47955, 56295, 79925, 86319, 93825, 139725, 143865, 168885, 239775, 258957, 281475, 431595, 719325, 776871, 844425, 1294785, 2157975, 3884355, 6473925, 19421775]

約数ペア:

[(1, 19421775), (3, 6473925), (5, 3884355), (9, 2157975), (15, 1294785), (23, 844425), (25, 776871), (27, 719325), (45, 431595), (69, 281475), (75, 258957), (81, 239775), (115, 168885), (135, 143865), (139, 139725), (207, 93825), (225, 86319), (243, 79925), (345, 56295), (405, 47955), (417, 46575), (575, 33777), (621, 31275), (675, 28773), (695, 27945), (1035, 18765), (1215, 15985), (1251, 15525), (1725, 11259), (1863, 10425), (2025, 9591), (2085, 9315), (3105, 6255), (3197, 6075), (3475, 5589), (3753, 5175)]