20665125

素因数分解:

$3^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:197

約数の個数: 80

約数和(自身を含む): 41753712

約数和(自身を除く): 21088587

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 125, 135, 157, 195, 225, 325, 351, 375, 405, 471, 585, 675, 785, 975, 1053, 1125, 1413, 1625, 1755, 2025, 2041, 2355, 2925, 3375, 3925, 4239, 4875, 5265, 6123, 7065, 8775, 10125, 10205, 11775, 12717, 14625, 18369, 19625, 21195, 26325, 30615, 35325, 43875, 51025, 55107, 58875, 63585, 91845, 105975, 131625, 153075, 165321, 176625, 255125, 275535, 317925, 459225, 529875, 765375, 826605, 1377675, 1589625, 2296125, 4133025, 6888375, 20665125]

約数ペア:

[(1, 20665125), (3, 6888375), (5, 4133025), (9, 2296125), (13, 1589625), (15, 1377675), (25, 826605), (27, 765375), (39, 529875), (45, 459225), (65, 317925), (75, 275535), (81, 255125), (117, 176625), (125, 165321), (135, 153075), (157, 131625), (195, 105975), (225, 91845), (325, 63585), (351, 58875), (375, 55107), (405, 51025), (471, 43875), (585, 35325), (675, 30615), (785, 26325), (975, 21195), (1053, 19625), (1125, 18369), (1413, 14625), (1625, 12717), (1755, 11775), (2025, 10205), (2041, 10125), (2355, 8775), (2925, 7065), (3375, 6123), (3925, 5265), (4239, 4875)]