20179425

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1$

素因数の和:80

約数の個数: 108

約数和(自身を含む): 43397520

約数和(自身を除く): 23218095

約数列:

[1, 3, 5, 7, 15, 17, 19, 21, 25, 35, 49, 51, 57, 75, 85, 95, 105, 119, 133, 147, 175, 245, 255, 285, 289, 323, 357, 399, 425, 475, 525, 595, 665, 735, 833, 867, 931, 969, 1225, 1275, 1425, 1445, 1615, 1785, 1995, 2023, 2261, 2499, 2793, 2975, 3325, 3675, 4165, 4335, 4655, 4845, 5491, 6069, 6783, 7225, 8075, 8925, 9975, 10115, 11305, 12495, 13965, 14161, 15827, 16473, 20825, 21675, 23275, 24225, 27455, 30345, 33915, 38437, 42483, 47481, 50575, 56525, 62475, 69825, 70805, 79135, 82365, 115311, 137275, 151725, 169575, 192185, 212415, 237405, 269059, 354025, 395675, 411825, 576555, 807177, 960925, 1062075, 1187025, 1345295, 2882775, 4035885, 6726475, 20179425]

約数ペア:

[(1, 20179425), (3, 6726475), (5, 4035885), (7, 2882775), (15, 1345295), (17, 1187025), (19, 1062075), (21, 960925), (25, 807177), (35, 576555), (49, 411825), (51, 395675), (57, 354025), (75, 269059), (85, 237405), (95, 212415), (105, 192185), (119, 169575), (133, 151725), (147, 137275), (175, 115311), (245, 82365), (255, 79135), (285, 70805), (289, 69825), (323, 62475), (357, 56525), (399, 50575), (425, 47481), (475, 42483), (525, 38437), (595, 33915), (665, 30345), (735, 27455), (833, 24225), (867, 23275), (931, 21675), (969, 20825), (1225, 16473), (1275, 15827), (1425, 14161), (1445, 13965), (1615, 12495), (1785, 11305), (1995, 10115), (2023, 9975), (2261, 8925), (2499, 8075), (2793, 7225), (2975, 6783), (3325, 6069), (3675, 5491), (4165, 4845), (4335, 4655)]