77905815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 144571392

約数和(自身を除く): 66665577

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 71, 85, 195, 213, 221, 255, 331, 355, 663, 923, 993, 1065, 1105, 1207, 1655, 2769, 3315, 3621, 4303, 4615, 4965, 5627, 6035, 12909, 13845, 15691, 16881, 18105, 21515, 23501, 28135, 47073, 64545, 70503, 73151, 78455, 84405, 117505, 219453, 235365, 305513, 352515, 365755, 399517, 916539, 1097265, 1198551, 1527565, 1997585, 4582695, 5193721, 5992755, 15581163, 25968605, 77905815]

約数ペア:

[(1, 77905815), (3, 25968605), (5, 15581163), (13, 5992755), (15, 5193721), (17, 4582695), (39, 1997585), (51, 1527565), (65, 1198551), (71, 1097265), (85, 916539), (195, 399517), (213, 365755), (221, 352515), (255, 305513), (331, 235365), (355, 219453), (663, 117505), (923, 84405), (993, 78455), (1065, 73151), (1105, 70503), (1207, 64545), (1655, 47073), (2769, 28135), (3315, 23501), (3621, 21515), (4303, 18105), (4615, 16881), (4965, 15691), (5627, 13845), (6035, 12909)]