20123143960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{234317}}^1$

素因数の和:234460

約数の個数: 64

約数和(自身を含む): 48082053600

約数和(自身を除く): 27958909640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 113, 152, 190, 226, 380, 452, 565, 760, 904, 1130, 2147, 2260, 4294, 4520, 8588, 10735, 17176, 21470, 42940, 85880, 234317, 468634, 937268, 1171585, 1874536, 2343170, 4452023, 4686340, 8904046, 9372680, 17808092, 22260115, 26477821, 35616184, 44520230, 52955642, 89040460, 105911284, 132389105, 178080920, 211822568, 264778210, 503078599, 529556420, 1006157198, 1059112840, 2012314396, 2515392995, 4024628792, 5030785990, 10061571980, 20123143960]

約数ペア:

[(1, 20123143960), (2, 10061571980), (4, 5030785990), (5, 4024628792), (8, 2515392995), (10, 2012314396), (19, 1059112840), (20, 1006157198), (38, 529556420), (40, 503078599), (76, 264778210), (95, 211822568), (113, 178080920), (152, 132389105), (190, 105911284), (226, 89040460), (380, 52955642), (452, 44520230), (565, 35616184), (760, 26477821), (904, 22260115), (1130, 17808092), (2147, 9372680), (2260, 8904046), (4294, 4686340), (4520, 4452023), (8588, 2343170), (10735, 1874536), (17176, 1171585), (21470, 937268), (42940, 468634), (85880, 234317)]