20787574288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{977}}^1\times {\mathrm{102293}}^1$

素因数の和:103291

約数の個数: 40

約数和(自身を含む): 43418892888

約数和(自身を除く): 22631318600

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 977, 1954, 3908, 7816, 12701, 15632, 25402, 50804, 101608, 102293, 203216, 204586, 409172, 818344, 1329809, 1636688, 2659618, 5319236, 10638472, 21276944, 99940261, 199880522, 399761044, 799522088, 1299223393, 1599044176, 2598446786, 5196893572, 10393787144, 20787574288]

約数ペア:

[(1, 20787574288), (2, 10393787144), (4, 5196893572), (8, 2598446786), (13, 1599044176), (16, 1299223393), (26, 799522088), (52, 399761044), (104, 199880522), (208, 99940261), (977, 21276944), (1954, 10638472), (3908, 5319236), (7816, 2659618), (12701, 1636688), (15632, 1329809), (25402, 818344), (50804, 409172), (101608, 204586), (102293, 203216)]