19639935

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{2969}}^1$

素因数の和:2997

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 20989665

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 2969, 6615, 8907, 14845, 20783, 26721, 44535, 62349, 80163, 103915, 133605, 145481, 187047, 311745, 400815, 436443, 561141, 727405, 935235, 1309329, 2182215, 2805705, 3927987, 6546645, 19639935]

約数ペア:

[(1, 19639935), (3, 6546645), (5, 3927987), (7, 2805705), (9, 2182215), (15, 1309329), (21, 935235), (27, 727405), (35, 561141), (45, 436443), (49, 400815), (63, 311745), (105, 187047), (135, 145481), (147, 133605), (189, 103915), (245, 80163), (315, 62349), (441, 44535), (735, 26721), (945, 20783), (1323, 14845), (2205, 8907), (2969, 6615)]