261796480

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{907}}^1$

素因数の和:978

約数の個数: 128

約数和(自身を含む): 700176960

約数和(自身を除く): 438380480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 41, 44, 55, 64, 80, 82, 88, 110, 128, 160, 164, 176, 205, 220, 320, 328, 352, 410, 440, 451, 640, 656, 704, 820, 880, 902, 907, 1312, 1408, 1640, 1760, 1804, 1814, 2255, 2624, 3280, 3520, 3608, 3628, 4510, 4535, 5248, 6560, 7040, 7216, 7256, 9020, 9070, 9977, 13120, 14432, 14512, 18040, 18140, 19954, 26240, 28864, 29024, 36080, 36280, 37187, 39908, 49885, 57728, 58048, 72160, 72560, 74374, 79816, 99770, 116096, 144320, 145120, 148748, 159632, 185935, 199540, 288640, 290240, 297496, 319264, 371870, 399080, 409057, 580480, 594992, 638528, 743740, 798160, 818114, 1189984, 1277056, 1487480, 1596320, 1636228, 2045285, 2379968, 2974960, 3192640, 3272456, 4090570, 4759936, 5949920, 6385280, 6544912, 8181140, 11899840, 13089824, 16362280, 23799680, 26179648, 32724560, 52359296, 65449120, 130898240, 261796480]

約数ペア:

[(1, 261796480), (2, 130898240), (4, 65449120), (5, 52359296), (8, 32724560), (10, 26179648), (11, 23799680), (16, 16362280), (20, 13089824), (22, 11899840), (32, 8181140), (40, 6544912), (41, 6385280), (44, 5949920), (55, 4759936), (64, 4090570), (80, 3272456), (82, 3192640), (88, 2974960), (110, 2379968), (128, 2045285), (160, 1636228), (164, 1596320), (176, 1487480), (205, 1277056), (220, 1189984), (320, 818114), (328, 798160), (352, 743740), (410, 638528), (440, 594992), (451, 580480), (640, 409057), (656, 399080), (704, 371870), (820, 319264), (880, 297496), (902, 290240), (907, 288640), (1312, 199540), (1408, 185935), (1640, 159632), (1760, 148748), (1804, 145120), (1814, 144320), (2255, 116096), (2624, 99770), (3280, 79816), (3520, 74374), (3608, 72560), (3628, 72160), (4510, 58048), (4535, 57728), (5248, 49885), (6560, 39908), (7040, 37187), (7216, 36280), (7256, 36080), (9020, 29024), (9070, 28864), (9977, 26240), (13120, 19954), (14432, 18140), (14512, 18040)]