1440872720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{111869}}^1$

素因数の和:111912

約数の個数: 80

約数和(自身を含む): 3995101440

約数和(自身を除く): 2554228720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880, 111869, 223738, 447476, 559345, 783083, 894952, 1118690, 1566166, 1789904, 2237380, 2572987, 3132332, 3915415, 4474760, 5145974, 6264664, 7830830, 8949520, 10291948, 12529328, 12864935, 15661660, 18010909, 20583896, 25729870, 31323320, 36021818, 41167792, 51459740, 62646640, 72043636, 90054545, 102919480, 144087272, 180109090, 205838960, 288174544, 360218180, 720436360, 1440872720]

約数ペア:

[(1, 1440872720), (2, 720436360), (4, 360218180), (5, 288174544), (7, 205838960), (8, 180109090), (10, 144087272), (14, 102919480), (16, 90054545), (20, 72043636), (23, 62646640), (28, 51459740), (35, 41167792), (40, 36021818), (46, 31323320), (56, 25729870), (70, 20583896), (80, 18010909), (92, 15661660), (112, 12864935), (115, 12529328), (140, 10291948), (161, 8949520), (184, 7830830), (230, 6264664), (280, 5145974), (322, 4474760), (368, 3915415), (460, 3132332), (560, 2572987), (644, 2237380), (805, 1789904), (920, 1566166), (1288, 1118690), (1610, 894952), (1840, 783083), (2576, 559345), (3220, 447476), (6440, 223738), (12880, 111869)]