18705040

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3833}}^1$

素因数の和:3907

約数の個数: 40

約数和(自身を含む): 44213688

約数和(自身を除く): 25508648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3833, 4880, 7666, 15332, 19165, 30664, 38330, 61328, 76660, 153320, 233813, 306640, 467626, 935252, 1169065, 1870504, 2338130, 3741008, 4676260, 9352520, 18705040]

約数ペア:

[(1, 18705040), (2, 9352520), (4, 4676260), (5, 3741008), (8, 2338130), (10, 1870504), (16, 1169065), (20, 935252), (40, 467626), (61, 306640), (80, 233813), (122, 153320), (244, 76660), (305, 61328), (488, 38330), (610, 30664), (976, 19165), (1220, 15332), (2440, 7666), (3833, 4880)]