20804948320

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{526441}}^1$

素因数の和:526488

約数の個数: 96

約数和(自身を含む): 55718621280

約数和(自身を除く): 34913672960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 494, 520, 608, 760, 988, 1040, 1235, 1520, 1976, 2080, 2470, 3040, 3952, 4940, 7904, 9880, 19760, 39520, 526441, 1052882, 2105764, 2632205, 4211528, 5264410, 6843733, 8423056, 10002379, 10528820, 13687466, 16846112, 20004758, 21057640, 27374932, 34218665, 40009516, 42115280, 50011895, 54749864, 68437330, 80019032, 84230560, 100023790, 109499728, 130030927, 136874660, 160038064, 200047580, 218999456, 260061854, 273749320, 320076128, 400095160, 520123708, 547498640, 650154635, 800190320, 1040247416, 1094997280, 1300309270, 1600380640, 2080494832, 2600618540, 4160989664, 5201237080, 10402474160, 20804948320]

約数ペア:

[(1, 20804948320), (2, 10402474160), (4, 5201237080), (5, 4160989664), (8, 2600618540), (10, 2080494832), (13, 1600380640), (16, 1300309270), (19, 1094997280), (20, 1040247416), (26, 800190320), (32, 650154635), (38, 547498640), (40, 520123708), (52, 400095160), (65, 320076128), (76, 273749320), (80, 260061854), (95, 218999456), (104, 200047580), (130, 160038064), (152, 136874660), (160, 130030927), (190, 109499728), (208, 100023790), (247, 84230560), (260, 80019032), (304, 68437330), (380, 54749864), (416, 50011895), (494, 42115280), (520, 40009516), (608, 34218665), (760, 27374932), (988, 21057640), (1040, 20004758), (1235, 16846112), (1520, 13687466), (1976, 10528820), (2080, 10002379), (2470, 8423056), (3040, 6843733), (3952, 5264410), (4940, 4211528), (7904, 2632205), (9880, 2105764), (19760, 1052882), (39520, 526441)]