654975

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 36

約数和(自身を含む): 1218672

約数和(自身を除く): 563697

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 71, 75, 123, 205, 213, 225, 355, 369, 615, 639, 1025, 1065, 1775, 1845, 2911, 3075, 3195, 5325, 8733, 9225, 14555, 15975, 26199, 43665, 72775, 130995, 218325, 654975]

約数ペア:

[(1, 654975), (3, 218325), (5, 130995), (9, 72775), (15, 43665), (25, 26199), (41, 15975), (45, 14555), (71, 9225), (75, 8733), (123, 5325), (205, 3195), (213, 3075), (225, 2911), (355, 1845), (369, 1775), (615, 1065), (639, 1025)]