20178400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{2293}}^1$

素因数の和:2324

約数の個数: 72

約数和(自身を含む): 53762184

約数和(自身を除く): 33583784

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 160, 176, 200, 220, 275, 352, 400, 440, 550, 800, 880, 1100, 1760, 2200, 2293, 4400, 4586, 8800, 9172, 11465, 18344, 22930, 25223, 36688, 45860, 50446, 57325, 73376, 91720, 100892, 114650, 126115, 183440, 201784, 229300, 252230, 366880, 403568, 458600, 504460, 630575, 807136, 917200, 1008920, 1261150, 1834400, 2017840, 2522300, 4035680, 5044600, 10089200, 20178400]

約数ペア:

[(1, 20178400), (2, 10089200), (4, 5044600), (5, 4035680), (8, 2522300), (10, 2017840), (11, 1834400), (16, 1261150), (20, 1008920), (22, 917200), (25, 807136), (32, 630575), (40, 504460), (44, 458600), (50, 403568), (55, 366880), (80, 252230), (88, 229300), (100, 201784), (110, 183440), (160, 126115), (176, 114650), (200, 100892), (220, 91720), (275, 73376), (352, 57325), (400, 50446), (440, 45860), (550, 36688), (800, 25223), (880, 22930), (1100, 18344), (1760, 11465), (2200, 9172), (2293, 8800), (4400, 4586)]