19006540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{389}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 26857460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 349, 389, 698, 778, 1396, 1556, 1745, 1945, 2443, 2723, 3490, 3890, 4886, 5446, 6980, 7780, 9772, 10892, 12215, 13615, 24430, 27230, 48860, 54460, 135761, 271522, 543044, 678805, 950327, 1357610, 1900654, 2715220, 3801308, 4751635, 9503270, 19006540]

約数ペア:

[(1, 19006540), (2, 9503270), (4, 4751635), (5, 3801308), (7, 2715220), (10, 1900654), (14, 1357610), (20, 950327), (28, 678805), (35, 543044), (70, 271522), (140, 135761), (349, 54460), (389, 48860), (698, 27230), (778, 24430), (1396, 13615), (1556, 12215), (1745, 10892), (1945, 9772), (2443, 7780), (2723, 6980), (3490, 5446), (3890, 4886)]