19420875

素因数分解:

$3^2\times 5^3\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:365

約数の個数: 48

約数和(自身を含む): 35709024

約数和(自身を除く): 16288149

約数列:

[1, 3, 5, 9, 15, 25, 45, 61, 75, 125, 183, 225, 283, 305, 375, 549, 849, 915, 1125, 1415, 1525, 2547, 2745, 4245, 4575, 7075, 7625, 12735, 13725, 17263, 21225, 22875, 35375, 51789, 63675, 68625, 86315, 106125, 155367, 258945, 318375, 431575, 776835, 1294725, 2157875, 3884175, 6473625, 19420875]

約数ペア:

[(1, 19420875), (3, 6473625), (5, 3884175), (9, 2157875), (15, 1294725), (25, 776835), (45, 431575), (61, 318375), (75, 258945), (125, 155367), (183, 106125), (225, 86315), (283, 68625), (305, 63675), (375, 51789), (549, 35375), (849, 22875), (915, 21225), (1125, 17263), (1415, 13725), (1525, 12735), (2547, 7625), (2745, 7075), (4245, 4575)]