21237975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8581}}^1$

素因数の和:8608

約数の個数: 36

約数和(自身を含む): 41502552

約数和(自身を除く): 20264577

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8581, 25743, 42905, 77229, 94391, 128715, 214525, 283173, 386145, 471955, 643575, 849519, 1415865, 1930725, 2359775, 4247595, 7079325, 21237975]

約数ペア:

[(1, 21237975), (3, 7079325), (5, 4247595), (9, 2359775), (11, 1930725), (15, 1415865), (25, 849519), (33, 643575), (45, 471955), (55, 386145), (75, 283173), (99, 214525), (165, 128715), (225, 94391), (275, 77229), (495, 42905), (825, 25743), (2475, 8581)]