20968000

素因数分解:

$2^6\times 5^3\times {\mathrm{2621}}^1$

素因数の和:2648

約数の個数: 56

約数和(自身を含む): 51947064

約数和(自身を除く): 30979064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2621, 4000, 5242, 8000, 10484, 13105, 20968, 26210, 41936, 52420, 65525, 83872, 104840, 131050, 167744, 209680, 262100, 327625, 419360, 524200, 655250, 838720, 1048400, 1310500, 2096800, 2621000, 4193600, 5242000, 10484000, 20968000]

約数ペア:

[(1, 20968000), (2, 10484000), (4, 5242000), (5, 4193600), (8, 2621000), (10, 2096800), (16, 1310500), (20, 1048400), (25, 838720), (32, 655250), (40, 524200), (50, 419360), (64, 327625), (80, 262100), (100, 209680), (125, 167744), (160, 131050), (200, 104840), (250, 83872), (320, 65525), (400, 52420), (500, 41936), (800, 26210), (1000, 20968), (1600, 13105), (2000, 10484), (2621, 8000), (4000, 5242)]