21786375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 40360320

約数和(自身を除く): 18573945

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 109, 123, 125, 195, 205, 325, 327, 375, 533, 545, 615, 975, 1025, 1417, 1599, 1625, 1635, 2665, 2725, 3075, 4251, 4469, 4875, 5125, 7085, 7995, 8175, 13325, 13407, 13625, 15375, 21255, 22345, 35425, 39975, 40875, 58097, 66625, 67035, 106275, 111725, 174291, 177125, 199875, 290485, 335175, 531375, 558625, 871455, 1452425, 1675875, 4357275, 7262125, 21786375]

約数ペア:

[(1, 21786375), (3, 7262125), (5, 4357275), (13, 1675875), (15, 1452425), (25, 871455), (39, 558625), (41, 531375), (65, 335175), (75, 290485), (109, 199875), (123, 177125), (125, 174291), (195, 111725), (205, 106275), (325, 67035), (327, 66625), (375, 58097), (533, 40875), (545, 39975), (615, 35425), (975, 22345), (1025, 21255), (1417, 15375), (1599, 13625), (1625, 13407), (1635, 13325), (2665, 8175), (2725, 7995), (3075, 7085), (4251, 5125), (4469, 4875)]