20216956060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{290557}}^1$

素因数の和:290651

約数の個数: 72

約数和(自身を含む): 50082901344

約数和(自身を除く): 29865945284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1988, 2485, 3479, 4970, 6958, 9940, 13916, 17395, 34790, 69580, 290557, 581114, 1162228, 1452785, 2033899, 2905570, 4067798, 5811140, 8135596, 10169495, 14237293, 20338990, 20629547, 28474586, 40677980, 41259094, 56949172, 71186465, 82518188, 103147735, 142372930, 144406829, 206295470, 284745860, 288813658, 412590940, 577627316, 722034145, 1010847803, 1444068290, 2021695606, 2888136580, 4043391212, 5054239015, 10108478030, 20216956060]

約数ペア:

[(1, 20216956060), (2, 10108478030), (4, 5054239015), (5, 4043391212), (7, 2888136580), (10, 2021695606), (14, 1444068290), (20, 1010847803), (28, 722034145), (35, 577627316), (49, 412590940), (70, 288813658), (71, 284745860), (98, 206295470), (140, 144406829), (142, 142372930), (196, 103147735), (245, 82518188), (284, 71186465), (355, 56949172), (490, 41259094), (497, 40677980), (710, 28474586), (980, 20629547), (994, 20338990), (1420, 14237293), (1988, 10169495), (2485, 8135596), (3479, 5811140), (4970, 4067798), (6958, 2905570), (9940, 2033899), (13916, 1452785), (17395, 1162228), (34790, 581114), (69580, 290557)]