20305888

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 42774480

約数和(自身を除く): 22468592

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 163, 229, 272, 326, 458, 544, 652, 916, 1304, 1832, 2608, 2771, 3664, 3893, 5216, 5542, 7328, 7786, 11084, 15572, 22168, 31144, 37327, 44336, 62288, 74654, 88672, 124576, 149308, 298616, 597232, 634559, 1194464, 1269118, 2538236, 5076472, 10152944, 20305888]

約数ペア:

[(1, 20305888), (2, 10152944), (4, 5076472), (8, 2538236), (16, 1269118), (17, 1194464), (32, 634559), (34, 597232), (68, 298616), (136, 149308), (163, 124576), (229, 88672), (272, 74654), (326, 62288), (458, 44336), (544, 37327), (652, 31144), (916, 22168), (1304, 15572), (1832, 11084), (2608, 7786), (2771, 7328), (3664, 5542), (3893, 5216)]