12378920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 29376000

約数和(自身を除く): 16997080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 149, 155, 248, 268, 298, 310, 335, 536, 596, 620, 670, 745, 1192, 1240, 1340, 1490, 2077, 2680, 2980, 4154, 4619, 5960, 8308, 9238, 9983, 10385, 16616, 18476, 19966, 20770, 23095, 36952, 39932, 41540, 46190, 49915, 79864, 83080, 92380, 99830, 184760, 199660, 309473, 399320, 618946, 1237892, 1547365, 2475784, 3094730, 6189460, 12378920]

約数ペア:

[(1, 12378920), (2, 6189460), (4, 3094730), (5, 2475784), (8, 1547365), (10, 1237892), (20, 618946), (31, 399320), (40, 309473), (62, 199660), (67, 184760), (124, 99830), (134, 92380), (149, 83080), (155, 79864), (248, 49915), (268, 46190), (298, 41540), (310, 39932), (335, 36952), (536, 23095), (596, 20770), (620, 19966), (670, 18476), (745, 16616), (1192, 10385), (1240, 9983), (1340, 9238), (1490, 8308), (2077, 5960), (2680, 4619), (2980, 4154)]