11981620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^2$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 30506112

約数和(自身を除く): 18524492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 61, 70, 92, 115, 122, 140, 161, 230, 244, 305, 322, 427, 460, 610, 644, 805, 854, 1220, 1403, 1610, 1708, 2135, 2806, 3220, 3721, 4270, 5612, 7015, 7442, 8540, 9821, 14030, 14884, 18605, 19642, 26047, 28060, 37210, 39284, 49105, 52094, 74420, 85583, 98210, 104188, 130235, 171166, 196420, 260470, 342332, 427915, 520940, 599081, 855830, 1198162, 1711660, 2396324, 2995405, 5990810, 11981620]

約数ペア:

[(1, 11981620), (2, 5990810), (4, 2995405), (5, 2396324), (7, 1711660), (10, 1198162), (14, 855830), (20, 599081), (23, 520940), (28, 427915), (35, 342332), (46, 260470), (61, 196420), (70, 171166), (92, 130235), (115, 104188), (122, 98210), (140, 85583), (161, 74420), (230, 52094), (244, 49105), (305, 39284), (322, 37210), (427, 28060), (460, 26047), (610, 19642), (644, 18605), (805, 14884), (854, 14030), (1220, 9821), (1403, 8540), (1610, 7442), (1708, 7015), (2135, 5612), (2806, 4270), (3220, 3721)]