19893825

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{743}}^1$

素因数の和:783

約数の個数: 72

約数和(自身を含む): 43175808

約数和(自身を除く): 23281983

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 51, 63, 75, 85, 105, 119, 153, 175, 225, 255, 315, 357, 425, 525, 595, 743, 765, 1071, 1275, 1575, 1785, 2229, 2975, 3715, 3825, 5201, 5355, 6687, 8925, 11145, 12631, 15603, 18575, 26005, 26775, 33435, 37893, 46809, 55725, 63155, 78015, 88417, 113679, 130025, 167175, 189465, 234045, 265251, 315775, 390075, 442085, 568395, 795753, 947325, 1170225, 1326255, 2210425, 2841975, 3978765, 6631275, 19893825]

約数ペア:

[(1, 19893825), (3, 6631275), (5, 3978765), (7, 2841975), (9, 2210425), (15, 1326255), (17, 1170225), (21, 947325), (25, 795753), (35, 568395), (45, 442085), (51, 390075), (63, 315775), (75, 265251), (85, 234045), (105, 189465), (119, 167175), (153, 130025), (175, 113679), (225, 88417), (255, 78015), (315, 63155), (357, 55725), (425, 46809), (525, 37893), (595, 33435), (743, 26775), (765, 26005), (1071, 18575), (1275, 15603), (1575, 12631), (1785, 11145), (2229, 8925), (2975, 6687), (3715, 5355), (3825, 5201)]