209308900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{269}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 472469760

約数和(自身を除く): 263160860

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 251, 269, 310, 502, 538, 620, 775, 1004, 1076, 1255, 1345, 1550, 2510, 2690, 3100, 5020, 5380, 6275, 6725, 7781, 8339, 12550, 13450, 15562, 16678, 25100, 26900, 31124, 33356, 38905, 41695, 67519, 77810, 83390, 135038, 155620, 166780, 194525, 208475, 270076, 337595, 389050, 416950, 675190, 778100, 833900, 1350380, 1687975, 2093089, 3375950, 4186178, 6751900, 8372356, 10465445, 20930890, 41861780, 52327225, 104654450, 209308900]

約数ペア:

[(1, 209308900), (2, 104654450), (4, 52327225), (5, 41861780), (10, 20930890), (20, 10465445), (25, 8372356), (31, 6751900), (50, 4186178), (62, 3375950), (100, 2093089), (124, 1687975), (155, 1350380), (251, 833900), (269, 778100), (310, 675190), (502, 416950), (538, 389050), (620, 337595), (775, 270076), (1004, 208475), (1076, 194525), (1255, 166780), (1345, 155620), (1550, 135038), (2510, 83390), (2690, 77810), (3100, 67519), (5020, 41695), (5380, 38905), (6275, 33356), (6725, 31124), (7781, 26900), (8339, 25100), (12550, 16678), (13450, 15562)]