257991920

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4523}}^1$

素因数の和:4590

約数の個数: 80

約数和(自身を含む): 646244352

約数和(自身を除く): 388252432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 460, 496, 620, 713, 920, 1240, 1426, 1840, 2480, 2852, 3565, 4523, 5704, 7130, 9046, 11408, 14260, 18092, 22615, 28520, 36184, 45230, 57040, 72368, 90460, 104029, 140213, 180920, 208058, 280426, 361840, 416116, 520145, 560852, 701065, 832232, 1040290, 1121704, 1402130, 1664464, 2080580, 2243408, 2804260, 3224899, 4161160, 5608520, 6449798, 8322320, 11217040, 12899596, 16124495, 25799192, 32248990, 51598384, 64497980, 128995960, 257991920]

約数ペア:

[(1, 257991920), (2, 128995960), (4, 64497980), (5, 51598384), (8, 32248990), (10, 25799192), (16, 16124495), (20, 12899596), (23, 11217040), (31, 8322320), (40, 6449798), (46, 5608520), (62, 4161160), (80, 3224899), (92, 2804260), (115, 2243408), (124, 2080580), (155, 1664464), (184, 1402130), (230, 1121704), (248, 1040290), (310, 832232), (368, 701065), (460, 560852), (496, 520145), (620, 416116), (713, 361840), (920, 280426), (1240, 208058), (1426, 180920), (1840, 140213), (2480, 104029), (2852, 90460), (3565, 72368), (4523, 57040), (5704, 45230), (7130, 36184), (9046, 28520), (11408, 22615), (14260, 18092)]