20833540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11447}}^1$

素因数の和:11476

約数の個数: 48

約数和(自身を含む): 53851392

約数和(自身を除く): 33017852

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11447, 22894, 45788, 57235, 80129, 114470, 148811, 160258, 228940, 297622, 320516, 400645, 595244, 744055, 801290, 1041677, 1488110, 1602580, 2083354, 2976220, 4166708, 5208385, 10416770, 20833540]

約数ペア:

[(1, 20833540), (2, 10416770), (4, 5208385), (5, 4166708), (7, 2976220), (10, 2083354), (13, 1602580), (14, 1488110), (20, 1041677), (26, 801290), (28, 744055), (35, 595244), (52, 400645), (65, 320516), (70, 297622), (91, 228940), (130, 160258), (140, 148811), (182, 114470), (260, 80129), (364, 57235), (455, 45788), (910, 22894), (1820, 11447)]