20091225

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 42854400

約数和(自身を除く): 22763175

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 49, 55, 71, 75, 77, 105, 147, 165, 175, 213, 231, 245, 275, 343, 355, 385, 497, 525, 539, 735, 781, 825, 1029, 1065, 1155, 1225, 1491, 1617, 1715, 1775, 1925, 2343, 2485, 2695, 3479, 3675, 3773, 3905, 5145, 5325, 5467, 5775, 7455, 8085, 8575, 10437, 11319, 11715, 12425, 13475, 16401, 17395, 18865, 19525, 24353, 25725, 27335, 37275, 38269, 40425, 52185, 56595, 58575, 73059, 82005, 86975, 94325, 114807, 121765, 136675, 191345, 260925, 267883, 282975, 365295, 410025, 574035, 608825, 803649, 956725, 1339415, 1826475, 2870175, 4018245, 6697075, 20091225]

約数ペア:

[(1, 20091225), (3, 6697075), (5, 4018245), (7, 2870175), (11, 1826475), (15, 1339415), (21, 956725), (25, 803649), (33, 608825), (35, 574035), (49, 410025), (55, 365295), (71, 282975), (75, 267883), (77, 260925), (105, 191345), (147, 136675), (165, 121765), (175, 114807), (213, 94325), (231, 86975), (245, 82005), (275, 73059), (343, 58575), (355, 56595), (385, 52185), (497, 40425), (525, 38269), (539, 37275), (735, 27335), (781, 25725), (825, 24353), (1029, 19525), (1065, 18865), (1155, 17395), (1225, 16401), (1491, 13475), (1617, 12425), (1715, 11715), (1775, 11319), (1925, 10437), (2343, 8575), (2485, 8085), (2695, 7455), (3479, 5775), (3675, 5467), (3773, 5325), (3905, 5145)]