20279600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^2\times {\mathrm{419}}^1$

素因数の和:459

約数の個数: 90

約数和(自身を含む): 53681460

約数和(自身を除く): 33401860

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 121, 176, 200, 220, 242, 275, 400, 419, 440, 484, 550, 605, 838, 880, 968, 1100, 1210, 1676, 1936, 2095, 2200, 2420, 3025, 3352, 4190, 4400, 4609, 4840, 6050, 6704, 8380, 9218, 9680, 10475, 12100, 16760, 18436, 20950, 23045, 24200, 33520, 36872, 41900, 46090, 48400, 50699, 73744, 83800, 92180, 101398, 115225, 167600, 184360, 202796, 230450, 253495, 368720, 405592, 460900, 506990, 811184, 921800, 1013980, 1267475, 1843600, 2027960, 2534950, 4055920, 5069900, 10139800, 20279600]

約数ペア:

[(1, 20279600), (2, 10139800), (4, 5069900), (5, 4055920), (8, 2534950), (10, 2027960), (11, 1843600), (16, 1267475), (20, 1013980), (22, 921800), (25, 811184), (40, 506990), (44, 460900), (50, 405592), (55, 368720), (80, 253495), (88, 230450), (100, 202796), (110, 184360), (121, 167600), (176, 115225), (200, 101398), (220, 92180), (242, 83800), (275, 73744), (400, 50699), (419, 48400), (440, 46090), (484, 41900), (550, 36872), (605, 33520), (838, 24200), (880, 23045), (968, 20950), (1100, 18436), (1210, 16760), (1676, 12100), (1936, 10475), (2095, 9680), (2200, 9218), (2420, 8380), (3025, 6704), (3352, 6050), (4190, 4840), (4400, 4609)]