20576325

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:547

約数の個数: 72

約数和(自身を含む): 43256160

約数和(自身を除く): 22679835

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, 509, 525, 539, 735, 825, 1155, 1225, 1527, 1617, 1925, 2545, 2695, 3563, 3675, 5599, 5775, 7635, 8085, 10689, 12725, 13475, 16797, 17815, 24941, 27995, 38175, 39193, 40425, 53445, 74823, 83985, 89075, 117579, 124705, 139975, 195965, 267225, 274351, 374115, 419925, 587895, 623525, 823053, 979825, 1371755, 1870575, 2939475, 4115265, 6858775, 20576325]

約数ペア:

[(1, 20576325), (3, 6858775), (5, 4115265), (7, 2939475), (11, 1870575), (15, 1371755), (21, 979825), (25, 823053), (33, 623525), (35, 587895), (49, 419925), (55, 374115), (75, 274351), (77, 267225), (105, 195965), (147, 139975), (165, 124705), (175, 117579), (231, 89075), (245, 83985), (275, 74823), (385, 53445), (509, 40425), (525, 39193), (539, 38175), (735, 27995), (825, 24941), (1155, 17815), (1225, 16797), (1527, 13475), (1617, 12725), (1925, 10689), (2545, 8085), (2695, 7635), (3563, 5775), (3675, 5599)]