20427225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 43163904

約数和(自身を除く): 22736679

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 41, 65, 73, 75, 91, 105, 123, 175, 195, 205, 219, 273, 287, 325, 365, 455, 511, 525, 533, 615, 861, 949, 975, 1025, 1095, 1365, 1435, 1533, 1599, 1825, 2275, 2555, 2665, 2847, 2993, 3075, 3731, 4305, 4745, 5475, 6643, 6825, 7175, 7665, 7995, 8979, 11193, 12775, 13325, 14235, 14965, 18655, 19929, 20951, 21525, 23725, 33215, 38325, 38909, 39975, 44895, 55965, 62853, 71175, 74825, 93275, 99645, 104755, 116727, 166075, 194545, 224475, 272363, 279825, 314265, 498225, 523775, 583635, 817089, 972725, 1361815, 1571325, 2918175, 4085445, 6809075, 20427225]

約数ペア:

[(1, 20427225), (3, 6809075), (5, 4085445), (7, 2918175), (13, 1571325), (15, 1361815), (21, 972725), (25, 817089), (35, 583635), (39, 523775), (41, 498225), (65, 314265), (73, 279825), (75, 272363), (91, 224475), (105, 194545), (123, 166075), (175, 116727), (195, 104755), (205, 99645), (219, 93275), (273, 74825), (287, 71175), (325, 62853), (365, 55965), (455, 44895), (511, 39975), (525, 38909), (533, 38325), (615, 33215), (861, 23725), (949, 21525), (975, 20951), (1025, 19929), (1095, 18655), (1365, 14965), (1435, 14235), (1533, 13325), (1599, 12775), (1825, 11193), (2275, 8979), (2555, 7995), (2665, 7665), (2847, 7175), (2993, 6825), (3075, 6643), (3731, 5475), (4305, 4745)]