208161280

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:158

約数の個数: 160

約数和(自身を含む): 535822848

約数和(自身を除く): 327661568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 61, 62, 64, 80, 86, 122, 124, 128, 155, 160, 172, 215, 244, 248, 256, 305, 310, 320, 344, 430, 488, 496, 512, 610, 620, 640, 688, 860, 976, 992, 1220, 1240, 1280, 1333, 1376, 1720, 1891, 1952, 1984, 2440, 2480, 2560, 2623, 2666, 2752, 3440, 3782, 3904, 3968, 4880, 4960, 5246, 5332, 5504, 6665, 6880, 7564, 7808, 7936, 9455, 9760, 9920, 10492, 10664, 11008, 13115, 13330, 13760, 15128, 15616, 15872, 18910, 19520, 19840, 20984, 21328, 22016, 26230, 26660, 27520, 30256, 31232, 37820, 39040, 39680, 41968, 42656, 52460, 53320, 55040, 60512, 75640, 78080, 79360, 81313, 83936, 85312, 104920, 106640, 110080, 121024, 151280, 156160, 162626, 167872, 170624, 209840, 213280, 242048, 302560, 325252, 335744, 341248, 406565, 419680, 426560, 484096, 605120, 650504, 671488, 682496, 813130, 839360, 853120, 968192, 1210240, 1301008, 1342976, 1626260, 1678720, 1706240, 2420480, 2602016, 3252520, 3357440, 3412480, 4840960, 5204032, 6505040, 6714880, 10408064, 13010080, 20816128, 26020160, 41632256, 52040320, 104080640, 208161280]

約数ペア:

[(1, 208161280), (2, 104080640), (4, 52040320), (5, 41632256), (8, 26020160), (10, 20816128), (16, 13010080), (20, 10408064), (31, 6714880), (32, 6505040), (40, 5204032), (43, 4840960), (61, 3412480), (62, 3357440), (64, 3252520), (80, 2602016), (86, 2420480), (122, 1706240), (124, 1678720), (128, 1626260), (155, 1342976), (160, 1301008), (172, 1210240), (215, 968192), (244, 853120), (248, 839360), (256, 813130), (305, 682496), (310, 671488), (320, 650504), (344, 605120), (430, 484096), (488, 426560), (496, 419680), (512, 406565), (610, 341248), (620, 335744), (640, 325252), (688, 302560), (860, 242048), (976, 213280), (992, 209840), (1220, 170624), (1240, 167872), (1280, 162626), (1333, 156160), (1376, 151280), (1720, 121024), (1891, 110080), (1952, 106640), (1984, 104920), (2440, 85312), (2480, 83936), (2560, 81313), (2623, 79360), (2666, 78080), (2752, 75640), (3440, 60512), (3782, 55040), (3904, 53320), (3968, 52460), (4880, 42656), (4960, 41968), (5246, 39680), (5332, 39040), (5504, 37820), (6665, 31232), (6880, 30256), (7564, 27520), (7808, 26660), (7936, 26230), (9455, 22016), (9760, 21328), (9920, 20984), (10492, 19840), (10664, 19520), (11008, 18910), (13115, 15872), (13330, 15616), (13760, 15128)]