16921840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 43309728

約数和(自身を除く): 26387888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 53, 65, 80, 104, 106, 130, 208, 212, 260, 265, 307, 424, 520, 530, 614, 689, 848, 1040, 1060, 1228, 1378, 1535, 2120, 2456, 2756, 3070, 3445, 3991, 4240, 4912, 5512, 6140, 6890, 7982, 11024, 12280, 13780, 15964, 16271, 19955, 24560, 27560, 31928, 32542, 39910, 55120, 63856, 65084, 79820, 81355, 130168, 159640, 162710, 211523, 260336, 319280, 325420, 423046, 650840, 846092, 1057615, 1301680, 1692184, 2115230, 3384368, 4230460, 8460920, 16921840]

約数ペア:

[(1, 16921840), (2, 8460920), (4, 4230460), (5, 3384368), (8, 2115230), (10, 1692184), (13, 1301680), (16, 1057615), (20, 846092), (26, 650840), (40, 423046), (52, 325420), (53, 319280), (65, 260336), (80, 211523), (104, 162710), (106, 159640), (130, 130168), (208, 81355), (212, 79820), (260, 65084), (265, 63856), (307, 55120), (424, 39910), (520, 32542), (530, 31928), (614, 27560), (689, 24560), (848, 19955), (1040, 16271), (1060, 15964), (1228, 13780), (1378, 12280), (1535, 11024), (2120, 7982), (2456, 6890), (2756, 6140), (3070, 5512), (3445, 4912), (3991, 4240)]