257394480

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{439}}^1$

素因数の和:811

約数の個数: 160

約数和(自身を含む): 916608000

約数和(自身を除く): 659213520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 349, 420, 439, 560, 698, 840, 878, 1047, 1317, 1396, 1680, 1745, 1756, 2094, 2195, 2443, 2634, 2792, 3073, 3490, 3512, 4188, 4390, 4886, 5235, 5268, 5584, 6146, 6585, 6980, 7024, 7329, 8376, 8780, 9219, 9772, 10470, 10536, 12215, 12292, 13170, 13960, 14658, 15365, 16752, 17560, 18438, 19544, 20940, 21072, 24430, 24584, 26340, 27920, 29316, 30730, 35120, 36645, 36876, 39088, 41880, 46095, 48860, 49168, 52680, 58632, 61460, 73290, 73752, 83760, 92190, 97720, 105360, 117264, 122920, 146580, 147504, 153211, 184380, 195440, 245840, 293160, 306422, 368760, 459633, 586320, 612844, 737520, 766055, 919266, 1072477, 1225688, 1532110, 1838532, 2144954, 2298165, 2451376, 3064220, 3217431, 3677064, 4289908, 4596330, 5362385, 6128440, 6434862, 7354128, 8579816, 9192660, 10724770, 12256880, 12869724, 16087155, 17159632, 18385320, 21449540, 25739448, 32174310, 36770640, 42899080, 51478896, 64348620, 85798160, 128697240, 257394480]

約数ペア:

[(1, 257394480), (2, 128697240), (3, 85798160), (4, 64348620), (5, 51478896), (6, 42899080), (7, 36770640), (8, 32174310), (10, 25739448), (12, 21449540), (14, 18385320), (15, 17159632), (16, 16087155), (20, 12869724), (21, 12256880), (24, 10724770), (28, 9192660), (30, 8579816), (35, 7354128), (40, 6434862), (42, 6128440), (48, 5362385), (56, 4596330), (60, 4289908), (70, 3677064), (80, 3217431), (84, 3064220), (105, 2451376), (112, 2298165), (120, 2144954), (140, 1838532), (168, 1532110), (210, 1225688), (240, 1072477), (280, 919266), (336, 766055), (349, 737520), (420, 612844), (439, 586320), (560, 459633), (698, 368760), (840, 306422), (878, 293160), (1047, 245840), (1317, 195440), (1396, 184380), (1680, 153211), (1745, 147504), (1756, 146580), (2094, 122920), (2195, 117264), (2443, 105360), (2634, 97720), (2792, 92190), (3073, 83760), (3490, 73752), (3512, 73290), (4188, 61460), (4390, 58632), (4886, 52680), (5235, 49168), (5268, 48860), (5584, 46095), (6146, 41880), (6585, 39088), (6980, 36876), (7024, 36645), (7329, 35120), (8376, 30730), (8780, 29316), (9219, 27920), (9772, 26340), (10470, 24584), (10536, 24430), (12215, 21072), (12292, 20940), (13170, 19544), (13960, 18438), (14658, 17560), (15365, 16752)]