257890240

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25997}}^1$

素因数の和:26045

約数の個数: 56

約数和(自身を含む): 633935232

約数和(自身を除く): 376044992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 25997, 51994, 103988, 129985, 207976, 259970, 415952, 519940, 805907, 831904, 1039880, 1611814, 1663808, 2079760, 3223628, 4029535, 4159520, 6447256, 8059070, 8319040, 12894512, 16118140, 25789024, 32236280, 51578048, 64472560, 128945120, 257890240]

約数ペア:

[(1, 257890240), (2, 128945120), (4, 64472560), (5, 51578048), (8, 32236280), (10, 25789024), (16, 16118140), (20, 12894512), (31, 8319040), (32, 8059070), (40, 6447256), (62, 4159520), (64, 4029535), (80, 3223628), (124, 2079760), (155, 1663808), (160, 1611814), (248, 1039880), (310, 831904), (320, 805907), (496, 519940), (620, 415952), (992, 259970), (1240, 207976), (1984, 129985), (2480, 103988), (4960, 51994), (9920, 25997)]