20518300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1$

素因数の和:859

約数の個数: 72

約数和(自身を含む): 50746752

約数和(自身を除く): 30228452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 220, 230, 253, 275, 460, 506, 550, 575, 811, 1012, 1100, 1150, 1265, 1622, 2300, 2530, 3244, 4055, 5060, 6325, 8110, 8921, 12650, 16220, 17842, 18653, 20275, 25300, 35684, 37306, 40550, 44605, 74612, 81100, 89210, 93265, 178420, 186530, 205183, 223025, 373060, 410366, 446050, 466325, 820732, 892100, 932650, 1025915, 1865300, 2051830, 4103660, 5129575, 10259150, 20518300]

約数ペア:

[(1, 20518300), (2, 10259150), (4, 5129575), (5, 4103660), (10, 2051830), (11, 1865300), (20, 1025915), (22, 932650), (23, 892100), (25, 820732), (44, 466325), (46, 446050), (50, 410366), (55, 373060), (92, 223025), (100, 205183), (110, 186530), (115, 178420), (220, 93265), (230, 89210), (253, 81100), (275, 74612), (460, 44605), (506, 40550), (550, 37306), (575, 35684), (811, 25300), (1012, 20275), (1100, 18653), (1150, 17842), (1265, 16220), (1622, 12650), (2300, 8921), (2530, 8110), (3244, 6325), (4055, 5060)]