21974720

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1597}}^1$

素因数の和:1657

約数の個数: 56

約数和(自身を含む): 53577744

約数和(自身を除く): 31603024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1597, 1720, 2752, 3194, 3440, 6388, 6880, 7985, 12776, 13760, 15970, 25552, 31940, 51104, 63880, 68671, 102208, 127760, 137342, 255520, 274684, 343355, 511040, 549368, 686710, 1098736, 1373420, 2197472, 2746840, 4394944, 5493680, 10987360, 21974720]

約数ペア:

[(1, 21974720), (2, 10987360), (4, 5493680), (5, 4394944), (8, 2746840), (10, 2197472), (16, 1373420), (20, 1098736), (32, 686710), (40, 549368), (43, 511040), (64, 343355), (80, 274684), (86, 255520), (160, 137342), (172, 127760), (215, 102208), (320, 68671), (344, 63880), (430, 51104), (688, 31940), (860, 25552), (1376, 15970), (1597, 13760), (1720, 12776), (2752, 7985), (3194, 6880), (3440, 6388)]