20164653944

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{509}}^1\times {\mathrm{991}}^1$

素因数の和:1788

約数の個数: 64

約数和(自身を含む): 40068864000

約数和(自身を除く): 19904210056

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 263, 509, 526, 991, 1018, 1052, 1982, 2036, 2104, 3964, 4072, 4997, 7928, 9671, 9994, 18829, 19342, 19988, 37658, 38684, 39976, 75316, 77368, 133867, 150632, 260633, 267734, 504419, 521266, 535468, 1008838, 1042532, 1070936, 2017676, 2085064, 2543473, 4035352, 4952027, 5086946, 9583961, 9904054, 10173892, 19167922, 19808108, 20347784, 38335844, 39616216, 76671688, 132662197, 265324394, 530648788, 1061297576, 2520581743, 5041163486, 10082326972, 20164653944]

約数ペア:

[(1, 20164653944), (2, 10082326972), (4, 5041163486), (8, 2520581743), (19, 1061297576), (38, 530648788), (76, 265324394), (152, 132662197), (263, 76671688), (509, 39616216), (526, 38335844), (991, 20347784), (1018, 19808108), (1052, 19167922), (1982, 10173892), (2036, 9904054), (2104, 9583961), (3964, 5086946), (4072, 4952027), (4997, 4035352), (7928, 2543473), (9671, 2085064), (9994, 2017676), (18829, 1070936), (19342, 1042532), (19988, 1008838), (37658, 535468), (38684, 521266), (39976, 504419), (75316, 267734), (77368, 260633), (133867, 150632)]