2018788520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{11213}}^1$

素因数の和:11874

約数の個数: 64

約数和(自身を含む): 5199707520

約数和(自身を除く): 3180919000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 643, 1286, 2572, 3215, 4501, 5144, 6430, 9002, 11213, 12860, 18004, 22426, 22505, 25720, 36008, 44852, 45010, 56065, 78491, 89704, 90020, 112130, 156982, 180040, 224260, 313964, 392455, 448520, 627928, 784910, 1569820, 3139640, 7209959, 14419918, 28839836, 36049795, 50469713, 57679672, 72099590, 100939426, 144199180, 201878852, 252348565, 288398360, 403757704, 504697130, 1009394260, 2018788520]

約数ペア:

[(1, 2018788520), (2, 1009394260), (4, 504697130), (5, 403757704), (7, 288398360), (8, 252348565), (10, 201878852), (14, 144199180), (20, 100939426), (28, 72099590), (35, 57679672), (40, 50469713), (56, 36049795), (70, 28839836), (140, 14419918), (280, 7209959), (643, 3139640), (1286, 1569820), (2572, 784910), (3215, 627928), (4501, 448520), (5144, 392455), (6430, 313964), (9002, 224260), (11213, 180040), (12860, 156982), (18004, 112130), (22426, 90020), (22505, 89704), (25720, 78491), (36008, 56065), (44852, 45010)]