18413840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7937}}^1$

素因数の和:7979

約数の個数: 40

約数和(自身を含む): 44294040

約数和(自身を除く): 25880200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 7937, 15874, 31748, 39685, 63496, 79370, 126992, 158740, 230173, 317480, 460346, 634960, 920692, 1150865, 1841384, 2301730, 3682768, 4603460, 9206920, 18413840]

約数ペア:

[(1, 18413840), (2, 9206920), (4, 4603460), (5, 3682768), (8, 2301730), (10, 1841384), (16, 1150865), (20, 920692), (29, 634960), (40, 460346), (58, 317480), (80, 230173), (116, 158740), (145, 126992), (232, 79370), (290, 63496), (464, 39685), (580, 31748), (1160, 15874), (2320, 7937)]