208359680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 529804800

約数和(自身を除く): 321445120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 59, 62, 64, 80, 89, 118, 124, 128, 155, 160, 178, 236, 248, 256, 295, 310, 320, 356, 445, 472, 496, 590, 620, 640, 712, 890, 944, 992, 1180, 1240, 1280, 1424, 1780, 1829, 1888, 1984, 2360, 2480, 2759, 2848, 3560, 3658, 3776, 3968, 4720, 4960, 5251, 5518, 5696, 7120, 7316, 7552, 7936, 9145, 9440, 9920, 10502, 11036, 11392, 13795, 14240, 14632, 15104, 18290, 18880, 19840, 21004, 22072, 22784, 26255, 27590, 28480, 29264, 36580, 37760, 39680, 42008, 44144, 52510, 55180, 56960, 58528, 73160, 75520, 84016, 88288, 105020, 110360, 113920, 117056, 146320, 162781, 168032, 176576, 210040, 220720, 234112, 292640, 325562, 336064, 353152, 420080, 441440, 468224, 585280, 651124, 672128, 706304, 813905, 840160, 882880, 1170560, 1302248, 1344256, 1627810, 1680320, 1765760, 2341120, 2604496, 3255620, 3360640, 3531520, 5208992, 6511240, 6721280, 10417984, 13022480, 20835968, 26044960, 41671936, 52089920, 104179840, 208359680]

約数ペア:

[(1, 208359680), (2, 104179840), (4, 52089920), (5, 41671936), (8, 26044960), (10, 20835968), (16, 13022480), (20, 10417984), (31, 6721280), (32, 6511240), (40, 5208992), (59, 3531520), (62, 3360640), (64, 3255620), (80, 2604496), (89, 2341120), (118, 1765760), (124, 1680320), (128, 1627810), (155, 1344256), (160, 1302248), (178, 1170560), (236, 882880), (248, 840160), (256, 813905), (295, 706304), (310, 672128), (320, 651124), (356, 585280), (445, 468224), (472, 441440), (496, 420080), (590, 353152), (620, 336064), (640, 325562), (712, 292640), (890, 234112), (944, 220720), (992, 210040), (1180, 176576), (1240, 168032), (1280, 162781), (1424, 146320), (1780, 117056), (1829, 113920), (1888, 110360), (1984, 105020), (2360, 88288), (2480, 84016), (2759, 75520), (2848, 73160), (3560, 58528), (3658, 56960), (3776, 55180), (3968, 52510), (4720, 44144), (4960, 42008), (5251, 39680), (5518, 37760), (5696, 36580), (7120, 29264), (7316, 28480), (7552, 27590), (7936, 26255), (9145, 22784), (9440, 22072), (9920, 21004), (10502, 19840), (11036, 18880), (11392, 18290), (13795, 15104), (14240, 14632)]