18282920

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 42854400

約数和(自身を除く): 24571480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 61, 118, 122, 127, 236, 244, 254, 295, 305, 472, 488, 508, 590, 610, 635, 1016, 1180, 1220, 1270, 2360, 2440, 2540, 3599, 5080, 7198, 7493, 7747, 14396, 14986, 15494, 17995, 28792, 29972, 30988, 35990, 37465, 38735, 59944, 61976, 71980, 74930, 77470, 143960, 149860, 154940, 299720, 309880, 457073, 914146, 1828292, 2285365, 3656584, 4570730, 9141460, 18282920]

約数ペア:

[(1, 18282920), (2, 9141460), (4, 4570730), (5, 3656584), (8, 2285365), (10, 1828292), (20, 914146), (40, 457073), (59, 309880), (61, 299720), (118, 154940), (122, 149860), (127, 143960), (236, 77470), (244, 74930), (254, 71980), (295, 61976), (305, 59944), (472, 38735), (488, 37465), (508, 35990), (590, 30988), (610, 29972), (635, 28792), (1016, 17995), (1180, 15494), (1220, 14986), (1270, 14396), (2360, 7747), (2440, 7493), (2540, 7198), (3599, 5080)]