20915616

素因数分解:

$2^5\times 3^1\times {\mathrm{223}}^1\times {\mathrm{977}}^1$

素因数の和:1213

約数の個数: 48

約数和(自身を含む): 55206144

約数和(自身を除く): 34290528

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 223, 446, 669, 892, 977, 1338, 1784, 1954, 2676, 2931, 3568, 3908, 5352, 5862, 7136, 7816, 10704, 11724, 15632, 21408, 23448, 31264, 46896, 93792, 217871, 435742, 653613, 871484, 1307226, 1742968, 2614452, 3485936, 5228904, 6971872, 10457808, 20915616]

約数ペア:

[(1, 20915616), (2, 10457808), (3, 6971872), (4, 5228904), (6, 3485936), (8, 2614452), (12, 1742968), (16, 1307226), (24, 871484), (32, 653613), (48, 435742), (96, 217871), (223, 93792), (446, 46896), (669, 31264), (892, 23448), (977, 21408), (1338, 15632), (1784, 11724), (1954, 10704), (2676, 7816), (2931, 7136), (3568, 5862), (3908, 5352)]