20172075

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:537

約数の個数: 72

約数和(自身を含む): 42408000

約数和(自身を除く): 22235925

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 49, 55, 75, 77, 105, 147, 165, 175, 231, 245, 275, 385, 499, 525, 539, 735, 825, 1155, 1225, 1497, 1617, 1925, 2495, 2695, 3493, 3675, 5489, 5775, 7485, 8085, 10479, 12475, 13475, 16467, 17465, 24451, 27445, 37425, 38423, 40425, 52395, 73353, 82335, 87325, 115269, 122255, 137225, 192115, 261975, 268961, 366765, 411675, 576345, 611275, 806883, 960575, 1344805, 1833825, 2881725, 4034415, 6724025, 20172075]

約数ペア:

[(1, 20172075), (3, 6724025), (5, 4034415), (7, 2881725), (11, 1833825), (15, 1344805), (21, 960575), (25, 806883), (33, 611275), (35, 576345), (49, 411675), (55, 366765), (75, 268961), (77, 261975), (105, 192115), (147, 137225), (165, 122255), (175, 115269), (231, 87325), (245, 82335), (275, 73353), (385, 52395), (499, 40425), (525, 38423), (539, 37425), (735, 27445), (825, 24451), (1155, 17465), (1225, 16467), (1497, 13475), (1617, 12475), (1925, 10479), (2495, 8085), (2695, 7485), (3493, 5775), (3675, 5489)]