19906575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1201}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 37560096

約数和(自身を除く): 17653521

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 65, 75, 85, 195, 221, 255, 325, 425, 663, 975, 1105, 1201, 1275, 3315, 3603, 5525, 6005, 15613, 16575, 18015, 20417, 30025, 46839, 61251, 78065, 90075, 102085, 234195, 265421, 306255, 390325, 510425, 796263, 1170975, 1327105, 1531275, 3981315, 6635525, 19906575]

約数ペア:

[(1, 19906575), (3, 6635525), (5, 3981315), (13, 1531275), (15, 1327105), (17, 1170975), (25, 796263), (39, 510425), (51, 390325), (65, 306255), (75, 265421), (85, 234195), (195, 102085), (221, 90075), (255, 78065), (325, 61251), (425, 46839), (663, 30025), (975, 20417), (1105, 18015), (1201, 16575), (1275, 15613), (3315, 6005), (3603, 5525)]