19919600

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2658

約数の個数: 60

約数和(自身を含む): 50394840

約数和(自身を除く): 30475240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2621, 3800, 5242, 7600, 10484, 13105, 20968, 26210, 41936, 49799, 52420, 65525, 99598, 104840, 131050, 199196, 209680, 248995, 262100, 398392, 497990, 524200, 796784, 995980, 1048400, 1244975, 1991960, 2489950, 3983920, 4979900, 9959800, 19919600]

約数ペア:

[(1, 19919600), (2, 9959800), (4, 4979900), (5, 3983920), (8, 2489950), (10, 1991960), (16, 1244975), (19, 1048400), (20, 995980), (25, 796784), (38, 524200), (40, 497990), (50, 398392), (76, 262100), (80, 248995), (95, 209680), (100, 199196), (152, 131050), (190, 104840), (200, 99598), (304, 65525), (380, 52420), (400, 49799), (475, 41936), (760, 26210), (950, 20968), (1520, 13105), (1900, 10484), (2621, 7600), (3800, 5242)]