18214660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{229}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 39760560

約数和(自身を除く): 21545900

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 229, 388, 410, 458, 485, 820, 916, 970, 1145, 1940, 2290, 3977, 4580, 7954, 9389, 15908, 18778, 19885, 22213, 37556, 39770, 44426, 46945, 79540, 88852, 93890, 111065, 187780, 222130, 444260, 910733, 1821466, 3642932, 4553665, 9107330, 18214660]

約数ペア:

[(1, 18214660), (2, 9107330), (4, 4553665), (5, 3642932), (10, 1821466), (20, 910733), (41, 444260), (82, 222130), (97, 187780), (164, 111065), (194, 93890), (205, 88852), (229, 79540), (388, 46945), (410, 44426), (458, 39770), (485, 37556), (820, 22213), (916, 19885), (970, 18778), (1145, 15908), (1940, 9389), (2290, 7954), (3977, 4580)]