21259575

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{4973}}^1$

素因数の和:5008

約数の個数: 36

約数和(自身を含む): 40090440

約数和(自身を除く): 18830865

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 1425, 4275, 4973, 14919, 24865, 44757, 74595, 94487, 124325, 223785, 283461, 372975, 472435, 850383, 1118925, 1417305, 2362175, 4251915, 7086525, 21259575]

約数ペア:

[(1, 21259575), (3, 7086525), (5, 4251915), (9, 2362175), (15, 1417305), (19, 1118925), (25, 850383), (45, 472435), (57, 372975), (75, 283461), (95, 223785), (171, 124325), (225, 94487), (285, 74595), (475, 44757), (855, 24865), (1425, 14919), (4275, 4973)]