20942621960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{72047}}^1$

素因数の和:72127

約数の個数: 96

約数和(自身を含む): 52211744640

約数和(自身を除く): 31269122680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 169, 172, 215, 260, 338, 344, 430, 520, 559, 676, 845, 860, 1118, 1352, 1690, 1720, 2236, 2795, 3380, 4472, 5590, 6760, 7267, 11180, 14534, 22360, 29068, 36335, 58136, 72047, 72670, 144094, 145340, 288188, 290680, 360235, 576376, 720470, 936611, 1440940, 1873222, 2881880, 3098021, 3746444, 4683055, 6196042, 7492888, 9366110, 12175943, 12392084, 15490105, 18732220, 24351886, 24784168, 30980210, 37464440, 40274273, 48703772, 60879715, 61960420, 80548546, 97407544, 121759430, 123920840, 161097092, 201371365, 243518860, 322194184, 402742730, 487037720, 523565549, 805485460, 1047131098, 1610970920, 2094262196, 2617827745, 4188524392, 5235655490, 10471310980, 20942621960]

約数ペア:

[(1, 20942621960), (2, 10471310980), (4, 5235655490), (5, 4188524392), (8, 2617827745), (10, 2094262196), (13, 1610970920), (20, 1047131098), (26, 805485460), (40, 523565549), (43, 487037720), (52, 402742730), (65, 322194184), (86, 243518860), (104, 201371365), (130, 161097092), (169, 123920840), (172, 121759430), (215, 97407544), (260, 80548546), (338, 61960420), (344, 60879715), (430, 48703772), (520, 40274273), (559, 37464440), (676, 30980210), (845, 24784168), (860, 24351886), (1118, 18732220), (1352, 15490105), (1690, 12392084), (1720, 12175943), (2236, 9366110), (2795, 7492888), (3380, 6196042), (4472, 4683055), (5590, 3746444), (6760, 3098021), (7267, 2881880), (11180, 1873222), (14534, 1440940), (22360, 936611), (29068, 720470), (36335, 576376), (58136, 360235), (72047, 290680), (72670, 288188), (144094, 145340)]