18385280

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1291

約数の個数: 64

約数和(自身を含む): 45900000

約数和(自身を除く): 27514720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1249, 1472, 1840, 2498, 2944, 3680, 4996, 6245, 7360, 9992, 12490, 14720, 19984, 24980, 28727, 39968, 49960, 57454, 79936, 99920, 114908, 143635, 159872, 199840, 229816, 287270, 399680, 459632, 574540, 799360, 919264, 1149080, 1838528, 2298160, 3677056, 4596320, 9192640, 18385280]

約数ペア:

[(1, 18385280), (2, 9192640), (4, 4596320), (5, 3677056), (8, 2298160), (10, 1838528), (16, 1149080), (20, 919264), (23, 799360), (32, 574540), (40, 459632), (46, 399680), (64, 287270), (80, 229816), (92, 199840), (115, 159872), (128, 143635), (160, 114908), (184, 99920), (230, 79936), (320, 57454), (368, 49960), (460, 39968), (640, 28727), (736, 24980), (920, 19984), (1249, 14720), (1472, 12490), (1840, 9992), (2498, 7360), (2944, 6245), (3680, 4996)]