7816540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 17186400

約数和(自身を除く): 9369860

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 149, 172, 215, 244, 298, 305, 430, 596, 610, 745, 860, 1220, 1490, 2623, 2980, 5246, 6407, 9089, 10492, 12814, 13115, 18178, 25628, 26230, 32035, 36356, 45445, 52460, 64070, 90890, 128140, 181780, 390827, 781654, 1563308, 1954135, 3908270, 7816540]

約数ペア:

[(1, 7816540), (2, 3908270), (4, 1954135), (5, 1563308), (10, 781654), (20, 390827), (43, 181780), (61, 128140), (86, 90890), (122, 64070), (149, 52460), (172, 45445), (215, 36356), (244, 32035), (298, 26230), (305, 25628), (430, 18178), (596, 13115), (610, 12814), (745, 10492), (860, 9089), (1220, 6407), (1490, 5246), (2623, 2980)]