217419375

素因数分解:

$3^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{359}}^1$

素因数の和:418

約数の個数: 80

約数和(自身を含む): 404870400

約数和(自身を除く): 187451025

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 75, 85, 95, 125, 255, 285, 323, 359, 375, 425, 475, 625, 969, 1077, 1275, 1425, 1615, 1795, 1875, 2125, 2375, 4845, 5385, 6103, 6375, 6821, 7125, 8075, 8975, 10625, 11875, 18309, 20463, 24225, 26925, 30515, 31875, 34105, 35625, 40375, 44875, 91545, 102315, 115957, 121125, 134625, 152575, 170525, 201875, 224375, 347871, 457725, 511575, 579785, 605625, 673125, 762875, 852625, 1739355, 2288625, 2557875, 2898925, 3814375, 4263125, 8696775, 11443125, 12789375, 14494625, 43483875, 72473125, 217419375]

約数ペア:

[(1, 217419375), (3, 72473125), (5, 43483875), (15, 14494625), (17, 12789375), (19, 11443125), (25, 8696775), (51, 4263125), (57, 3814375), (75, 2898925), (85, 2557875), (95, 2288625), (125, 1739355), (255, 852625), (285, 762875), (323, 673125), (359, 605625), (375, 579785), (425, 511575), (475, 457725), (625, 347871), (969, 224375), (1077, 201875), (1275, 170525), (1425, 152575), (1615, 134625), (1795, 121125), (1875, 115957), (2125, 102315), (2375, 91545), (4845, 44875), (5385, 40375), (6103, 35625), (6375, 34105), (6821, 31875), (7125, 30515), (8075, 26925), (8975, 24225), (10625, 20463), (11875, 18309)]