18420688

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 42872256

約数和(自身を除く): 24451568

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 44, 52, 83, 88, 97, 104, 143, 166, 176, 194, 208, 286, 332, 388, 572, 664, 776, 913, 1067, 1079, 1144, 1261, 1328, 1552, 1826, 2134, 2158, 2288, 2522, 3652, 4268, 4316, 5044, 7304, 8051, 8536, 8632, 10088, 11869, 13871, 14608, 16102, 17072, 17264, 20176, 23738, 27742, 32204, 47476, 55484, 64408, 88561, 94952, 104663, 110968, 128816, 177122, 189904, 209326, 221936, 354244, 418652, 708488, 837304, 1151293, 1416976, 1674608, 2302586, 4605172, 9210344, 18420688]

約数ペア:

[(1, 18420688), (2, 9210344), (4, 4605172), (8, 2302586), (11, 1674608), (13, 1416976), (16, 1151293), (22, 837304), (26, 708488), (44, 418652), (52, 354244), (83, 221936), (88, 209326), (97, 189904), (104, 177122), (143, 128816), (166, 110968), (176, 104663), (194, 94952), (208, 88561), (286, 64408), (332, 55484), (388, 47476), (572, 32204), (664, 27742), (776, 23738), (913, 20176), (1067, 17264), (1079, 17072), (1144, 16102), (1261, 14608), (1328, 13871), (1552, 11869), (1826, 10088), (2134, 8632), (2158, 8536), (2288, 8051), (2522, 7304), (3652, 5044), (4268, 4316)]