399255840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{277261}}^1$

素因数の和:277282

約数の個数: 72

約数和(自身を含む): 1362465468

約数和(自身を除く): 963209628

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 277261, 554522, 831783, 1109044, 1386305, 1663566, 2218088, 2495349, 2772610, 3327132, 4158915, 4436176, 4990698, 5545220, 6654264, 8317830, 8872352, 9981396, 11090440, 12476745, 13308528, 16635660, 19962792, 22180880, 24953490, 26617056, 33271320, 39925584, 44361760, 49906980, 66542640, 79851168, 99813960, 133085280, 199627920, 399255840]

約数ペア:

[(1, 399255840), (2, 199627920), (3, 133085280), (4, 99813960), (5, 79851168), (6, 66542640), (8, 49906980), (9, 44361760), (10, 39925584), (12, 33271320), (15, 26617056), (16, 24953490), (18, 22180880), (20, 19962792), (24, 16635660), (30, 13308528), (32, 12476745), (36, 11090440), (40, 9981396), (45, 8872352), (48, 8317830), (60, 6654264), (72, 5545220), (80, 4990698), (90, 4436176), (96, 4158915), (120, 3327132), (144, 2772610), (160, 2495349), (180, 2218088), (240, 1663566), (288, 1386305), (360, 1109044), (480, 831783), (720, 554522), (1440, 277261)]