20787216

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1044

約数の個数: 80

約数和(自身を含む): 59043840

約数和(自身を除く): 38256624

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 23, 24, 38, 46, 48, 57, 69, 76, 92, 114, 138, 152, 184, 228, 276, 304, 368, 437, 456, 552, 874, 912, 991, 1104, 1311, 1748, 1982, 2622, 2973, 3496, 3964, 5244, 5946, 6992, 7928, 10488, 11892, 15856, 18829, 20976, 22793, 23784, 37658, 45586, 47568, 56487, 68379, 75316, 91172, 112974, 136758, 150632, 182344, 225948, 273516, 301264, 364688, 433067, 451896, 547032, 866134, 903792, 1094064, 1299201, 1732268, 2598402, 3464536, 5196804, 6929072, 10393608, 20787216]

約数ペア:

[(1, 20787216), (2, 10393608), (3, 6929072), (4, 5196804), (6, 3464536), (8, 2598402), (12, 1732268), (16, 1299201), (19, 1094064), (23, 903792), (24, 866134), (38, 547032), (46, 451896), (48, 433067), (57, 364688), (69, 301264), (76, 273516), (92, 225948), (114, 182344), (138, 150632), (152, 136758), (184, 112974), (228, 91172), (276, 75316), (304, 68379), (368, 56487), (437, 47568), (456, 45586), (552, 37658), (874, 23784), (912, 22793), (991, 20976), (1104, 18829), (1311, 15856), (1748, 11892), (1982, 10488), (2622, 7928), (2973, 6992), (3496, 5946), (3964, 5244)]