66384640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 188375040

約数和(自身を除く): 121990400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 239, 248, 256, 280, 310, 320, 434, 448, 478, 496, 560, 620, 640, 868, 896, 956, 992, 1085, 1120, 1195, 1240, 1280, 1673, 1736, 1792, 1912, 1984, 2170, 2240, 2390, 2480, 3346, 3472, 3824, 3968, 4340, 4480, 4780, 4960, 6692, 6944, 7409, 7648, 7936, 8365, 8680, 8960, 9560, 9920, 13384, 13888, 14818, 15296, 16730, 17360, 19120, 19840, 26768, 27776, 29636, 30592, 33460, 34720, 37045, 38240, 39680, 51863, 53536, 55552, 59272, 61184, 66920, 69440, 74090, 76480, 103726, 107072, 118544, 133840, 138880, 148180, 152960, 207452, 214144, 237088, 259315, 267680, 277760, 296360, 305920, 414904, 428288, 474176, 518630, 535360, 592720, 829808, 948352, 1037260, 1070720, 1185440, 1659616, 1896704, 2074520, 2141440, 2370880, 3319232, 4149040, 4741760, 6638464, 8298080, 9483520, 13276928, 16596160, 33192320, 66384640]

約数ペア:

[(1, 66384640), (2, 33192320), (4, 16596160), (5, 13276928), (7, 9483520), (8, 8298080), (10, 6638464), (14, 4741760), (16, 4149040), (20, 3319232), (28, 2370880), (31, 2141440), (32, 2074520), (35, 1896704), (40, 1659616), (56, 1185440), (62, 1070720), (64, 1037260), (70, 948352), (80, 829808), (112, 592720), (124, 535360), (128, 518630), (140, 474176), (155, 428288), (160, 414904), (217, 305920), (224, 296360), (239, 277760), (248, 267680), (256, 259315), (280, 237088), (310, 214144), (320, 207452), (434, 152960), (448, 148180), (478, 138880), (496, 133840), (560, 118544), (620, 107072), (640, 103726), (868, 76480), (896, 74090), (956, 69440), (992, 66920), (1085, 61184), (1120, 59272), (1195, 55552), (1240, 53536), (1280, 51863), (1673, 39680), (1736, 38240), (1792, 37045), (1912, 34720), (1984, 33460), (2170, 30592), (2240, 29636), (2390, 27776), (2480, 26768), (3346, 19840), (3472, 19120), (3824, 17360), (3968, 16730), (4340, 15296), (4480, 14818), (4780, 13888), (4960, 13384), (6692, 9920), (6944, 9560), (7409, 8960), (7648, 8680), (7936, 8365)]