20039775

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:94

約数の個数: 96

約数和(自身を含む): 41664000

約数和(自身を除く): 21624225

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 41, 49, 57, 75, 95, 105, 123, 133, 147, 175, 205, 245, 285, 287, 343, 399, 475, 525, 615, 665, 735, 779, 861, 931, 1025, 1029, 1225, 1425, 1435, 1715, 1995, 2009, 2337, 2793, 3075, 3325, 3675, 3895, 4305, 4655, 5145, 5453, 6027, 6517, 7175, 8575, 9975, 10045, 11685, 13965, 14063, 16359, 19475, 19551, 21525, 23275, 25725, 27265, 30135, 32585, 38171, 42189, 50225, 58425, 69825, 70315, 81795, 97755, 114513, 136325, 150675, 162925, 190855, 210945, 267197, 351575, 408975, 488775, 572565, 801591, 954275, 1054725, 1335985, 2862825, 4007955, 6679925, 20039775]

約数ペア:

[(1, 20039775), (3, 6679925), (5, 4007955), (7, 2862825), (15, 1335985), (19, 1054725), (21, 954275), (25, 801591), (35, 572565), (41, 488775), (49, 408975), (57, 351575), (75, 267197), (95, 210945), (105, 190855), (123, 162925), (133, 150675), (147, 136325), (175, 114513), (205, 97755), (245, 81795), (285, 70315), (287, 69825), (343, 58425), (399, 50225), (475, 42189), (525, 38171), (615, 32585), (665, 30135), (735, 27265), (779, 25725), (861, 23275), (931, 21525), (1025, 19551), (1029, 19475), (1225, 16359), (1425, 14063), (1435, 13965), (1715, 11685), (1995, 10045), (2009, 9975), (2337, 8575), (2793, 7175), (3075, 6517), (3325, 6027), (3675, 5453), (3895, 5145), (4305, 4655)]