2005201960

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1\times {\mathrm{1979}}^1$

素因数の和:2410

約数の個数: 64

約数和(自身を含む): 4589006400

約数和(自身を除く): 2583804440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 347, 365, 584, 694, 730, 1388, 1460, 1735, 1979, 2776, 2920, 3470, 3958, 6940, 7916, 9895, 13880, 15832, 19790, 25331, 39580, 50662, 79160, 101324, 126655, 144467, 202648, 253310, 288934, 506620, 577868, 686713, 722335, 1013240, 1155736, 1373426, 1444670, 2746852, 2889340, 3433565, 5493704, 5778680, 6867130, 13734260, 27468520, 50130049, 100260098, 200520196, 250650245, 401040392, 501300490, 1002600980, 2005201960]

約数ペア:

[(1, 2005201960), (2, 1002600980), (4, 501300490), (5, 401040392), (8, 250650245), (10, 200520196), (20, 100260098), (40, 50130049), (73, 27468520), (146, 13734260), (292, 6867130), (347, 5778680), (365, 5493704), (584, 3433565), (694, 2889340), (730, 2746852), (1388, 1444670), (1460, 1373426), (1735, 1155736), (1979, 1013240), (2776, 722335), (2920, 686713), (3470, 577868), (3958, 506620), (6940, 288934), (7916, 253310), (9895, 202648), (13880, 144467), (15832, 126655), (19790, 101324), (25331, 79160), (39580, 50662)]