20674179760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1\times {\mathrm{20347}}^1$

素因数の和:21350

約数の個数: 80

約数和(自身を含む): 51820495776

約数和(自身を除く): 31146316016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 977, 1040, 1954, 3908, 4885, 7816, 9770, 12701, 15632, 19540, 20347, 25402, 39080, 40694, 50804, 63505, 78160, 81388, 101608, 101735, 127010, 162776, 203216, 203470, 254020, 264511, 325552, 406940, 508040, 529022, 813880, 1016080, 1058044, 1322555, 1627760, 2116088, 2645110, 4232176, 5290220, 10580440, 19879019, 21160880, 39758038, 79516076, 99395095, 159032152, 198790190, 258427247, 318064304, 397580380, 516854494, 795160760, 1033708988, 1292136235, 1590321520, 2067417976, 2584272470, 4134835952, 5168544940, 10337089880, 20674179760]

約数ペア:

[(1, 20674179760), (2, 10337089880), (4, 5168544940), (5, 4134835952), (8, 2584272470), (10, 2067417976), (13, 1590321520), (16, 1292136235), (20, 1033708988), (26, 795160760), (40, 516854494), (52, 397580380), (65, 318064304), (80, 258427247), (104, 198790190), (130, 159032152), (208, 99395095), (260, 79516076), (520, 39758038), (977, 21160880), (1040, 19879019), (1954, 10580440), (3908, 5290220), (4885, 4232176), (7816, 2645110), (9770, 2116088), (12701, 1627760), (15632, 1322555), (19540, 1058044), (20347, 1016080), (25402, 813880), (39080, 529022), (40694, 508040), (50804, 406940), (63505, 325552), (78160, 264511), (81388, 254020), (101608, 203470), (101735, 203216), (127010, 162776)]