40643920

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 98208000

約数和(自身を除く): 57564080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 79, 80, 109, 118, 158, 218, 236, 295, 316, 395, 436, 472, 545, 590, 632, 790, 872, 944, 1090, 1180, 1264, 1580, 1744, 2180, 2360, 3160, 4360, 4661, 4720, 6320, 6431, 8611, 8720, 9322, 12862, 17222, 18644, 23305, 25724, 32155, 34444, 37288, 43055, 46610, 51448, 64310, 68888, 74576, 86110, 93220, 102896, 128620, 137776, 172220, 186440, 257240, 344440, 372880, 508049, 514480, 688880, 1016098, 2032196, 2540245, 4064392, 5080490, 8128784, 10160980, 20321960, 40643920]

約数ペア:

[(1, 40643920), (2, 20321960), (4, 10160980), (5, 8128784), (8, 5080490), (10, 4064392), (16, 2540245), (20, 2032196), (40, 1016098), (59, 688880), (79, 514480), (80, 508049), (109, 372880), (118, 344440), (158, 257240), (218, 186440), (236, 172220), (295, 137776), (316, 128620), (395, 102896), (436, 93220), (472, 86110), (545, 74576), (590, 68888), (632, 64310), (790, 51448), (872, 46610), (944, 43055), (1090, 37288), (1180, 34444), (1264, 32155), (1580, 25724), (1744, 23305), (2180, 18644), (2360, 17222), (3160, 12862), (4360, 9322), (4661, 8720), (4720, 8611), (6320, 6431)]