28719225

素因数分解:

$3^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 53290240

約数和(自身を除く): 24571015

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 157, 225, 271, 471, 675, 785, 813, 1355, 1413, 2355, 2439, 3925, 4065, 4239, 6775, 7065, 7317, 11775, 12195, 20325, 21195, 35325, 36585, 42547, 60975, 105975, 127641, 182925, 212735, 382923, 638205, 1063675, 1148769, 1914615, 3191025, 5743845, 9573075, 28719225]

約数ペア:

[(1, 28719225), (3, 9573075), (5, 5743845), (9, 3191025), (15, 1914615), (25, 1148769), (27, 1063675), (45, 638205), (75, 382923), (135, 212735), (157, 182925), (225, 127641), (271, 105975), (471, 60975), (675, 42547), (785, 36585), (813, 35325), (1355, 21195), (1413, 20325), (2355, 12195), (2439, 11775), (3925, 7317), (4065, 7065), (4239, 6775)]