31978640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6553}}^1$

素因数の和:6627

約数の個数: 40

約数和(自身を含む): 75580728

約数和(自身を除く): 43602088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 6553, 13106, 26212, 32765, 52424, 65530, 104848, 131060, 262120, 399733, 524240, 799466, 1598932, 1998665, 3197864, 3997330, 6395728, 7994660, 15989320, 31978640]

約数ペア:

[(1, 31978640), (2, 15989320), (4, 7994660), (5, 6395728), (8, 3997330), (10, 3197864), (16, 1998665), (20, 1598932), (40, 799466), (61, 524240), (80, 399733), (122, 262120), (244, 131060), (305, 104848), (488, 65530), (610, 52424), (976, 32765), (1220, 26212), (2440, 13106), (4880, 6553)]