18295840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2789}}^1$

素因数の和:2845

約数の個数: 48

約数和(自身を含む): 44294040

約数和(自身を除く): 25998200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 2789, 3280, 5578, 6560, 11156, 13945, 22312, 27890, 44624, 55780, 89248, 111560, 114349, 223120, 228698, 446240, 457396, 571745, 914792, 1143490, 1829584, 2286980, 3659168, 4573960, 9147920, 18295840]

約数ペア:

[(1, 18295840), (2, 9147920), (4, 4573960), (5, 3659168), (8, 2286980), (10, 1829584), (16, 1143490), (20, 914792), (32, 571745), (40, 457396), (41, 446240), (80, 228698), (82, 223120), (160, 114349), (164, 111560), (205, 89248), (328, 55780), (410, 44624), (656, 27890), (820, 22312), (1312, 13945), (1640, 11156), (2789, 6560), (3280, 5578)]