20535260

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 44876160

約数和(自身を除く): 24340900

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 317, 395, 410, 634, 790, 820, 1268, 1580, 1585, 3170, 3239, 6340, 6478, 12956, 12997, 16195, 25043, 25994, 32390, 50086, 51988, 64780, 64985, 100172, 125215, 129970, 250430, 259940, 500860, 1026763, 2053526, 4107052, 5133815, 10267630, 20535260]

約数ペア:

[(1, 20535260), (2, 10267630), (4, 5133815), (5, 4107052), (10, 2053526), (20, 1026763), (41, 500860), (79, 259940), (82, 250430), (158, 129970), (164, 125215), (205, 100172), (316, 64985), (317, 64780), (395, 51988), (410, 50086), (634, 32390), (790, 25994), (820, 25043), (1268, 16195), (1580, 12997), (1585, 12956), (3170, 6478), (3239, 6340)]