400275840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1279}}^1$

素因数の和:1464

約数の個数: 128

約数和(自身を含む): 1284710400

約数和(自身を除く): 884434560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 163, 192, 240, 320, 326, 384, 480, 489, 640, 652, 815, 960, 978, 1279, 1304, 1630, 1920, 1956, 2445, 2558, 2608, 3260, 3837, 3912, 4890, 5116, 5216, 6395, 6520, 7674, 7824, 9780, 10232, 10432, 12790, 13040, 15348, 15648, 19185, 19560, 20464, 20864, 25580, 26080, 30696, 31296, 38370, 39120, 40928, 51160, 52160, 61392, 62592, 76740, 78240, 81856, 102320, 104320, 122784, 153480, 156480, 163712, 204640, 208477, 245568, 306960, 312960, 409280, 416954, 491136, 613920, 625431, 818560, 833908, 1042385, 1227840, 1250862, 1667816, 2084770, 2455680, 2501724, 3127155, 3335632, 4169540, 5003448, 6254310, 6671264, 8339080, 10006896, 12508620, 13342528, 16678160, 20013792, 25017240, 26685056, 33356320, 40027584, 50034480, 66712640, 80055168, 100068960, 133425280, 200137920, 400275840]

約数ペア:

[(1, 400275840), (2, 200137920), (3, 133425280), (4, 100068960), (5, 80055168), (6, 66712640), (8, 50034480), (10, 40027584), (12, 33356320), (15, 26685056), (16, 25017240), (20, 20013792), (24, 16678160), (30, 13342528), (32, 12508620), (40, 10006896), (48, 8339080), (60, 6671264), (64, 6254310), (80, 5003448), (96, 4169540), (120, 3335632), (128, 3127155), (160, 2501724), (163, 2455680), (192, 2084770), (240, 1667816), (320, 1250862), (326, 1227840), (384, 1042385), (480, 833908), (489, 818560), (640, 625431), (652, 613920), (815, 491136), (960, 416954), (978, 409280), (1279, 312960), (1304, 306960), (1630, 245568), (1920, 208477), (1956, 204640), (2445, 163712), (2558, 156480), (2608, 153480), (3260, 122784), (3837, 104320), (3912, 102320), (4890, 81856), (5116, 78240), (5216, 76740), (6395, 62592), (6520, 61392), (7674, 52160), (7824, 51160), (9780, 40928), (10232, 39120), (10432, 38370), (12790, 31296), (13040, 30696), (15348, 26080), (15648, 25580), (19185, 20864), (19560, 20464)]