20312480

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1607}}^1$

素因数の和:1701

約数の個数: 48

約数和(自身を含む): 48625920

約数和(自身を除く): 28313440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 1607, 2528, 3160, 3214, 6320, 6428, 8035, 12640, 12856, 16070, 25712, 32140, 51424, 64280, 126953, 128560, 253906, 257120, 507812, 634765, 1015624, 1269530, 2031248, 2539060, 4062496, 5078120, 10156240, 20312480]

約数ペア:

[(1, 20312480), (2, 10156240), (4, 5078120), (5, 4062496), (8, 2539060), (10, 2031248), (16, 1269530), (20, 1015624), (32, 634765), (40, 507812), (79, 257120), (80, 253906), (158, 128560), (160, 126953), (316, 64280), (395, 51424), (632, 32140), (790, 25712), (1264, 16070), (1580, 12856), (1607, 12640), (2528, 8035), (3160, 6428), (3214, 6320)]