281178240

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{20921}}^1$

素因数の和:20950

約数の個数: 128

約数和(自身を含む): 1024341120

約数和(自身を除く): 743162880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1680, 1920, 2240, 2688, 3360, 4480, 6720, 13440, 20921, 41842, 62763, 83684, 104605, 125526, 146447, 167368, 209210, 251052, 292894, 313815, 334736, 418420, 439341, 502104, 585788, 627630, 669472, 732235, 836840, 878682, 1004208, 1171576, 1255260, 1338944, 1464470, 1673680, 1757364, 2008416, 2196705, 2343152, 2510520, 2677888, 2928940, 3347360, 3514728, 4016832, 4393410, 4686304, 5021040, 5857880, 6694720, 7029456, 8033664, 8786820, 9372608, 10042080, 11715760, 13389440, 14058912, 17573640, 18745216, 20084160, 23431520, 28117824, 35147280, 40168320, 46863040, 56235648, 70294560, 93726080, 140589120, 281178240]

約数ペア:

[(1, 281178240), (2, 140589120), (3, 93726080), (4, 70294560), (5, 56235648), (6, 46863040), (7, 40168320), (8, 35147280), (10, 28117824), (12, 23431520), (14, 20084160), (15, 18745216), (16, 17573640), (20, 14058912), (21, 13389440), (24, 11715760), (28, 10042080), (30, 9372608), (32, 8786820), (35, 8033664), (40, 7029456), (42, 6694720), (48, 5857880), (56, 5021040), (60, 4686304), (64, 4393410), (70, 4016832), (80, 3514728), (84, 3347360), (96, 2928940), (105, 2677888), (112, 2510520), (120, 2343152), (128, 2196705), (140, 2008416), (160, 1757364), (168, 1673680), (192, 1464470), (210, 1338944), (224, 1255260), (240, 1171576), (280, 1004208), (320, 878682), (336, 836840), (384, 732235), (420, 669472), (448, 627630), (480, 585788), (560, 502104), (640, 439341), (672, 418420), (840, 334736), (896, 313815), (960, 292894), (1120, 251052), (1344, 209210), (1680, 167368), (1920, 146447), (2240, 125526), (2688, 104605), (3360, 83684), (4480, 62763), (6720, 41842), (13440, 20921)]