21179025

素因数分解:

$3^2\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:160

約数の個数: 108

約数和(自身を含む): 47136492

約数和(自身を除く): 25957467

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 49, 51, 63, 75, 85, 105, 113, 119, 147, 153, 175, 225, 245, 255, 315, 339, 357, 425, 441, 525, 565, 595, 735, 765, 791, 833, 1017, 1071, 1225, 1275, 1575, 1695, 1785, 1921, 2205, 2373, 2499, 2825, 2975, 3675, 3825, 3955, 4165, 5085, 5355, 5537, 5763, 7119, 7497, 8475, 8925, 9605, 11025, 11865, 12495, 13447, 16611, 17289, 19775, 20825, 25425, 26775, 27685, 28815, 35595, 37485, 40341, 48025, 49833, 59325, 62475, 67235, 83055, 86445, 94129, 121023, 138425, 144075, 177975, 187425, 201705, 249165, 282387, 336175, 415275, 432225, 470645, 605115, 847161, 1008525, 1245825, 1411935, 2353225, 3025575, 4235805, 7059675, 21179025]

約数ペア:

[(1, 21179025), (3, 7059675), (5, 4235805), (7, 3025575), (9, 2353225), (15, 1411935), (17, 1245825), (21, 1008525), (25, 847161), (35, 605115), (45, 470645), (49, 432225), (51, 415275), (63, 336175), (75, 282387), (85, 249165), (105, 201705), (113, 187425), (119, 177975), (147, 144075), (153, 138425), (175, 121023), (225, 94129), (245, 86445), (255, 83055), (315, 67235), (339, 62475), (357, 59325), (425, 49833), (441, 48025), (525, 40341), (565, 37485), (595, 35595), (735, 28815), (765, 27685), (791, 26775), (833, 25425), (1017, 20825), (1071, 19775), (1225, 17289), (1275, 16611), (1575, 13447), (1695, 12495), (1785, 11865), (1921, 11025), (2205, 9605), (2373, 8925), (2499, 8475), (2825, 7497), (2975, 7119), (3675, 5763), (3825, 5537), (3955, 5355), (4165, 5085)]